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netstat shows TCP ports and their TCP-state. netstat -an # display netwk connections (listening, connected, etc) netstat -4 -f inet -n -r # display routing

manager for zsh. pacaur -S antigen Plugins are declared within your ~/.zshrc. source /path/to/antigen.zsh antigen bundle zsh-users/zsh-autosuggestions antigen

ruby-irb # ~/.irbrc IRB.conf[:USE_SINGLELINE] = true # use 'readline' instead of multiline support irb irb --readline # uses readline, but disables multiline

tool like top, that monitors traffic through pf firewall. 1 # 2 # 3 # 4 # 5 # packets blocked for each rule f # filter (see below) filter syntax is very

Consolidates some python project dotfiles. Mostly superceeded by python pyproject.toml. [tool:pytest] python_files = *.py testpaths = tests norecursedirs

Reads line from a terminal, executes them. Can be configured to use vi keybindings. set editing-mode vi set keymap vi # meta+(hjkl) jumps into normal mode

FreeBSD uses ifconfig to manage network interfaces. manipulate interfaces within shell. # create/destroy a network interface of type 'tun' ifconfig tun

vim -p a b c # open in new tabs vim -o a b c # open in vert splits vim -O a b c # open in horiz splits vim --cmd "let foo=bar" --cmd "let bar=baz" # run

<?php class Automobile { def drive() { } }

/** Do something * * @param $name * @return string */ function get_hello_message($name) { // comment /* foo bar baz */ }

sudo for windows! choco install -y gsudo

Extendable search. Can be powered by fzf. :Telescope lsp_workspace_symbols query=Foo::Bar::Baz

S # display source port D # display destination port n # show IP instead of host name P # pause ? # display additional commands TX: transmitted RX: received

# show the environment for a PID at the time the process was started ps -xep ${PID}

echo "some text\n"; pring "some text\n"; $animals = array("cat", "dog", "monkey"); print_r($animals);

:profile start profile.log :profile func * :profile file * " At this point do slow actions :profile pause :noautocmd qall!

The linux ip command is used to manage network interfaces on linux. ip addr # list network interfaces ip set wlp3s0 up # activate network interface

iw is used to manage wireless internet connections from linux. iw wlp3s0 info # print wireless connection info iw wlp3s0 scan # scan for access points

df lists volume information, how much room is consumed, remaining, etc. df -h # print consumption, in human readable sizes

file gives you information about the type of file. sudo file -s -L /dev/sdc1

lsof prints files that are currently open. lsof # list files belonging to active processes

maximum characters Windows restricts paths to a max of 260 characters (with their bytestring path interface, unicode supports longer paths) Invalid filenames

dependency manager for php. brew install composer # [MacOS] not in macports cd project/ # dir with composer.json composer install # install deps

google.com # DNS query for google.com host google.com 8.8.8.8 # DNS query using 8.8.8.8 as nameserver

" requirement Plug 'https://github.com/jparise/vim-graphql' :CocInstall coc-graphql Add a graphql-config to your project # ${project}/.graphqlrc # See:

throw new Exception("Division by zero"); try { // code that can throw exceptions } catch(Exception $e) { // code that runs when an exception is caught

Settings > Keyboard: Shortcuts: App Shortcuts: - (All Applications) Close Tab: Ctrl+W # create - (Google Chrome) Select Next Tab: Ctrl+P # create - (Google

if var == 'no' : print "something" elif var == 'yes' : print "something else" else: print "something else entirely" You may find the all keyword useful:

TODO: I definitely have detailed notes on this somewhere.. TODO: Also record standardized locations with friendly permisisons (like for ssh keys) msg /server:wintermute

rbenv. Consider using nix and direnv instead. cd yourproject/ echo "2.6.5" > .ruby-version # now when you enter directory, correct ruby is used automatically

tzinfo = ActiveSupport::TimeZone.find_tzinfo("America/Toronto") timezone = ActiveSupport::TimeZone.new(tzinfo) Time.parse("1970-01-01T10:00:00Z").in_timezone(timezone)

Watch/Count syscalls that a process makes. # dtrace is included in base system pkg install dtrace-toolkit # (optional) dtrace scripts kldload dtraceall

Console Driver (tty) for FreeBSD, introduced as default in FreeBSD-12. # /boot/loader.conf vt.kern.vty = "sc" # enable syscons

mycli is an alternative mysql/mariadb/percona client built overtop of prompt_toolkit. pacaur -S mycli pip install mycli [main] multi_line = True key_bindings

nmap is a commandline port scanner. # don't use sudo. give your user permission to X nmap -sP '192.168.1.*' # scan all ips in addr range nmap 192.168.1

NOTE: see also dig # get BGP protocol ASN for facebook whois -h v4.whois.cymru.com " -v $(host facebook.com | grep "has address" | cut -d " " -f4)" | tail

the commandline from vim's command mode. :w !sh " execute the current file using /bin/sh :w !less " pipe entire file to less :'<,'>!less " pipe visual-selection

PHP fastcgi process manager. Can be configured to listen on a port or socket. Configure where php-fpm should listen # /usr/local/etc/php-fpm.d/www.conf

NOTE: unmaintained, use coc-pyright instead python -m pip install jedi python -m pip install pylint :CocInstall coc-python " Interactive Choice :CocCommand

interact with ios device filesystem on computer. sudo pacman -S libimobiledevice ifuse # unlock phone, plug into computer, and on iphone # 'trust' the

a very fast ruby ast node-types all defined within node.rb stree match /some/file.rb # generate matcher code stree search 'VarRef' /some/file.rb # search

commands to jump for next/step/continue like gdb. instead you have to use the UI, or use OS-specific hotkeys: super ' # next super ; # step super \ # continue

]c - advance to the next block with differences [c - reverse search for the previous block with differences do (diff obtain) - bring changes from the other

man zdb https://www.unix.com/man-page/FreeBSD/8/zdb/

-latest.exe It is very much a work in progress, at this stage you cannot use calendars at all. Settings > Configure Korganizer General > Calendars > Add

Bat is a syntax highlighted cat. bat file.graphql bat \ -l go `# syntaxhighlight for lang` \ --file-name 'my-file.go' `# set file title in result` \ --theme

and or 1 == 1 1 != 0 1 <= 2 2 >= 1 'foo' =~ 'foobar' # 'foobar' contains 'foo' a ||= b # `a || a = b` (if a is not defined, a = b) obj_1 eql? obj_2 # if

ruby. NOTE: It does not appear that iruby supports vi editing mode. I would use ruby pry instead, it has 1st-tier support. sudo pacman -S libffi libtool ruby

nodes https://github.com/rubocop/rubocop-ast/blob/master/docs/modules/ROOT/pages/node_types.adoc Node Patterns (like AST selectors) https://docs.rubocop.

on FreeBSD, you'll need to create a virtual block device # for the image using: # mdconfig -a -t vnode -f /path/to/image.img -u 0 # link image to virtual

Configurable/Cross-Platform commandline resource manager written in rust. Similar to gnu top. Has a vi mode. NOTE: neat, but graphs are CPU drains and

xchm file.chm

kchmviewer file.chm

xarchiver is a GUI program to manage various archive formats sudo pacman -S xarchiver

Applescript osascript -e 'display notification "nice text" with title "nice title"'

Deletes files within a filesystem. I haven't had the occasion to use it yet. wipe -r /path/to/wipe

pkg install cbsd

% a comment

sudo pacman -S aria2 aria2c file.torrent # start a torrent download

(+ 3 4) ;; adds 3 and 4

;; comments begin with double-semicolons

if true then "true" else "false"

Tools --> Preferences --> Automatically detect Markdown

NOTE: Did not work for me sudo pacman -S mono git clone https://github.com/zabirauf/icsharp cd icsharp xbuild

/* Multiline * comment */ let foo = 1 // comment

# line comment

Issue a notification from the commandline on a linux/bsd server. notify-send SUMMARY BODY

requests a password, encryption algorithm varies` verify encryption algorithm used 7z l -slt file.zip

require 'json' {"a" => "b"}.to_json #> '{"a": "b"}' JSON.parse('{"a": 1}') #> { "a" => 1 }

Sub mysub(argument1,argument2) some statements End Sub

Get-Date Get-TimeZone Set-TimeZone 'Eastern Standard Time'

sudo pacman -S qutebrowser # archlinux choco install -y qutebrowser # windows brew cask install qutebrowser # macos

Compress/Extract rar archives. # extract, preserving directory structure unrar x src.rar /path/out/

Change the user/group that owns a file. chown user:group file

sudo pacman -S pulseaudio pulseaudio-alsa sudo pacman -S pavucontrol-qt

TODO: UNFINISHED! import java.util.logging.Logger; import java.util.logging.*;

Mount directories as other directories. mount -t nullfs /mnt/mywebsite /usr/local/www/mywebsite

Set-ItemProperty -Path 'Registry::HKCU\Environment' -Name PATH -Value ($PATH.Path +";"+ $rezbin_PATH)

jot -r 1 1 50 # 1 random num between 1 and 50

wg # print configured connections wg show # print configured connections wg-quick up wg0 # activate wg0

Lines matching '\s*"' are comments. " a comment " another comment

FreeBSD # requires port: sysutils/fusefs-exfat # NOTE: I was unable to compile (2020/05) mount -t exfat /dev/ad1s1 /mnt

commandline launchctl -h

ls --group-directories-first ls -X # sort by file-extension ls -v # sort with natural sorting

(message "her name is %s, her age is %d" (list "vickie" 24) ) ;; print with substitution (print "abc") ;; normal print

CentOS uses a the rpm based package manager YUM. yum search <package> # search for a package yum install <package> # install package yum update # update

Full list https://nixos.org/nix/manual/#sec-language-operators 1 + 1 # addition 1 - 1 # subtraction 1 * 1 # multiplication 1 / 1 # division

RPCS3 is a playstation 3 emulator. pacaur -S cereal pacaur -S rpcs3-git

Dim var ' Normal variable within scope Public var ' Global variable Private var ' (? private to what)

Set-PSBreakpoint # set breakpoint on current line Set-PSBreakpoint -Line 15 # set breakpoint on line 15

Anbox is an android emulator for linux. pacman -S anbox

sudo pacman -S jupyter pacaur -S jre pacaur -S jdk11 git clone https://github.com/SpencerPark/IJava.git cd IJava/ sudo chmod u+w gradlew ./gradlew installKernel

IF( <expr> AND <expr> ) IF( <expr> OR <expr> ) https://cmake.org/cmake/help/v3.11/command/if.html

if ($PATH[0] -ne 'C:\Python27') { ... } # if statement if (!( $PATH.Contains('C:\Python27') )){ ... } # if not statement

CSVs are comma separated tables. headers are available, but not mandatory. entries may include commas if the row/column is written within double-quotes

A UML or general node-based diagram tool. sudo pacman -S dia

require 'yaml' YAML.load("a: 1", aliases: true) #> {"a"=>1} YAML.dump(['a', ['b']], indentation: 2)

pacman -S python # Archlinux pkg install python37 # FreeBSD brew install python # MacOS

values can be put in sections sections cannot be nested '=' or ':' may be used interchangeably [section a] key_1 = value1 key_2 = value2 [section b] key_3

import ctypes #returns kernel ctypes.windll.kernel32

An AST parser for ruby, in ruby https://github.com/whitequark/parser ruby-parse -e 'puts "hello"' (send nil :puts (str "hello"))

Dir.mktmpdir("some_prefix_") do |dirpath| # ... end Tempfile.create("some_prefix_") do |fd| fd.write("hello") end

# keep copy of dir tar -cvf baikal_data.tar /usr/local/www/baikal/Specific # extract into new install

REM note the abscence of quotes around string set YOURVAR=Your Value echo %YOURVAR%

== # equals LEQ # <= GEQ # >= LSS # < GTR # > EQU # == NEQ # != if ("%var%" LEQ "3") { echo %var% is less than 3 }

vmstat shows info about processes, memory, paging, io, and cpu activity. vmstat 5 # run vmstat once every 5s

foo = sorted(['z', 'b', 'a']) # new copy sort(mylist) # mutates 'mylist' sorted(mylist, key=lambda x: x % 2) # sort by result of 'key'

cli screen capture tool, preinstalled with macos. screencapture -s -T 5 out.png # select region, wait 5s, then capture selection

redis-cli -h domain.com # connect to redis on cli redis-cli -h domain.com FLUSHALL # execute 'FLUSHALL' and exit

bulitin lib to examine/modify resources used by current program. Example import resource resource.getrusage(resource.RUSAGE_SELF).ru_maxrss

Alt-x, ielm ;; lisp interpreter

sudo pacman -S deluge-gtk # deluge is daemon only Edit > Preferences: Network: Encryption: Inbound: Required Outbound: Required Level: Full Stream

The oldest threading interface for python. import thread thread.start_new_thread(func, ('argA',), {'kwargA': 1}) lock = thread.allocate_lock() lock.acquire()

redis client for python import redis conn = redis.Redis(host='foo.bar.com', port=, password='password') conn.set('foo', 'bar') conn.get('foo') # >>> 'bar'

from passlib.hash import sha512_crypt sha512_crypt.hash('password')

$var === NULL // is instance $var !== NULL // is not instance $var = 1 // equal $var != 1 // not equal $var .= "bar" // append to string $var += 1; //

php classes are very similar to java, right down to extends and implements. class Foo { /** string */ private name; public function __constructor() { $this->name

X11 server for MacOS. Download http://xquartz.macosforge.org/landing/ # Do not start xterm on xquartz start defaults write org.macosforge.xquartz.X11 \

import bcrypt hashed_pw = bcrypt.hashpw('password'.encode('utf-8'), bcrypt.gensalt()) if bcrypt.checkpw(password.encode('utf-8'), hashed_pw): print('password

Deletes files off a disk. Should do this before disposing of work HDDs, or before recycling dad's old work computers. Does not necessarily work for most

if (Test-Path -Path "$src_dir") # check if path exists New-Item "$src_dir" -ItemType Directory # create directory Remove-Item -Recurse -Force some_dir

OpenBSD's package manager. #install sudo pkg_add -r <package> #delete pkg_info | grep <package> sudo pkg_delete <package-version.number> #search sudo pkg_search

IF [%VARIABLE%]==[] ( echo Variable is not set ) ELSE IF [%VARIABLE]==[blah]( echo some condition ) ELSE ( echo Value Found )

sudo pacman -S lightdm lightdm-gtk-greeter sudo systemctl enable lightdm

pacman -S python-digitalocean # Arch pip install python-digitalocean # Other

desktop_end_user_computing/vmware_workstation_player/15_0 When prompted, use /etc/systemd for system service scripts directory

encrypts strings using the OS's crypt.c. only available on unix-like systems. import crypt # use strongest available crypt.crypt('password') # use specific algorithm

nload samples badwidth usage over a network interface. sudo pacman -S nload sudo nload # left/right switch network interface being monitored

Wing-Commander privateer clone buitl out of ascii characters. It is amazing to me that this works as a game, it is even beautiful. Install: pacaur -S asciisec

Timer('t=a; a=b; b=t', 'a=1; b=2').timeit() #> 0.088729 time python2 lute.py ## use bash to simply time how long the script takes to run.

fbreader is a cross platform ebook reader. Apparently, quite customizable. sudo pacman -S fbreader FBReader file.epub

showkey displays keycodes produced by keypresses within a linux TTY. showkey --keycodes showkey --scancodes showkey -a # type ascii codes

sudo -u postgres pg_dumpall > backup.pgsql sudo -u postgres psql < backup.pgsql

A side-by-side tex/preview editor. pacman -S texlive # archlinux texlive

var = [1,2,3] for i in range(0, len(var)): print var[i] else: print "completed successfully without break statement" padding = 0 while padding < 6 : padding

Run npm installed executables. npx ${EXECUTABLE} ${ARGS[@]}

import numpy import resampy numpy.frombuffer(raw_wav_str, sr_orig=44100, sr_new=16000)

TODO: sort out what is activesupport extensions Time.parse("Wed Oct 11 13:49:06 2023 -0700") Date.parse("Wed Oct 11 13:49:06 2023 -0700") time.in_time_zone

code --install-plugin ms-python.python sudo pip install rope

Like argparse for API routes curl 'http://api/user' -d 'name=will' -d 'age=30+'

Configure linux boot ram disk. # regenerate mkinitcpio -p ${kernel-name} # ex: linux, linux-lts # temporarily load kernel module modprobe $KERNEL_MODULE

statsd is a daemon for stats aggregation. # <metricname>:<value>|<type> echo "foo:1|c" | nc -u -w0 127.0.0.1 8125

set-location # cd clear-host # clear copy-item # cp rename-item # remove-item # rm get-childitem write-output ... | select-string -pattern '.*' # grep

REM replace file echo "test" > C:/test.txt REM append file echo "test" >> C:/test.txt REM redirect stdout/stderr DIR SomeFile.txt 2>&1

NOTE: nftables is not a daemon. it applies settings and exits # nftables sudo pacman -S nftables sudo systemctl enable nftables # for logging sudo pacman

pacman -S texlive-bin texlive-core # archlinux Since tex is plaintext, you can use anything you'd like to edit it.

tui puleaudio control (duplicates pavucontrol-qt in console) pacaur -S ncpamixer F1 - F5 # each tab (playback, recording, output devices, ...) h/l # volume

ffmpeg -f gdigrab -framerate 30 -i title="german.avi - VLC media player" -b:v 3M germ.flv

call feedkeys(":abc def")

Assert 1, 'message' " assert boolean is true AssertEqual 'expected', 'result' " assert equals AssertNotEqual 'a', 'b' AssertThrows

Audit the linux kernel behaviour. auditctl -A exit,always -S connect # install log auditctl -d exit,always -S connect # uninstall log

sudo pkg install znc # FreeBSD sudo pacman -S znc # Archlinux The first time you run the service, you will be prompted to generate SSL certs. Do it. Connect

cd $your_project/build cmake .. # generate makefile make # compile project sudo make install # install compiled project (as super-user, so have write permissions

IF(<expr>) ELSEIF(<expr>) ELSE(<expr>) ENDIF(<expr>) # ======= # Example # ======= IF( 1 EQUALS 2 ) MESSAGE( "1 is equal to 2" ) ENDIF( 1 EQUALS 2 ) See

IF( 1 EQUALS 4 ) IF( 1 GREATER 4 ) If( 1 LESS 4 ) If( DEFINED ) If( IS_DIRECTORY ${path} ) If( IS_SYMLINK ${path} ) https://cmake.org/cmake/help/v3.11/command/if

Documents using msmtp to send emails for mutt. set sendmail = "/usr/bin/msmtp -a <account>"

You can instruct setuptools to install executables on your PATH using entry_points. setup( ... entry_points = { 'console_scripts': ['funniest-joke=funniest

;; test same datatype/value (if (equal "abc" "abc") (print "equal!") ;; if true (print "not equal!" ) ;; if false ) ;; if list equal (equal '(3 4 5) '(3

Install ruby bundler and gem install jekyll. gem update gem install jekyll

:Tab /= "align all = signs :Tab /=\zs "align everything after the = sign :Tab /=/l0r1 "define spacing on left/right of matched char NOTE: author also describes

Firefox's javascript engine. Includes an interpreter. pacaur -S spidermonkey js file.js

// header class MyClass: public MyParent { public: MyClass (int, int); void new_method (); }; // re-implement constructor // 1. duplicate interface //

inotify is a program that monitors a directory for new or changed files. sudo pacman -S inotify-tools

sudo update-ca-trust

php namespace Foo\Bar; class Baz { // ... } # /src/package/foo/bar/zab.php use Foo\Bar; new Bar\Baz()

REM query registry key reg query "HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server" /v AllowRemoteRPC REM set/modify registry key reg add "HKLM\S

sudo pacman -S samba sudo systemctl enable samba.service # sudo systemctl enable smb.service # sudo systemctl enable nmb.service sudo pkg install samba413

yourproject.csproj <Project Sdk="Microsoft.NET.Sdk"> <!-- ...project config... --> <ItemGroup> <PackageReference Include="Newtonsoft.Json" Version="9.0

sudo pacman -S wireguard-tools #sudo pacman -S wireguard-dkms # built into linux kernel >5.6 pkg install wireguard # /etc/rc.conf gateway_enable="YES"

firefox: Settings > Preferences: General: - [x] Play DRM controlled Content google-chrome: ?? High Def videos: # see https://www.maketecheasier.com/wa

Install windows fonts and DLLs in wine. winetricks list # list install categories winetricks ${CATEGORY} list # list available installs from a category

get-service # list all services get-service | get-member # list all properties of service objects get-service <service> # get target service object get-service

There are 3x types of comments in java. // inline comment /* multiline comment */ In java, docstrings are written above the item being documented. /**

A commandline fuzzy matcher. Not as featureful as fzf. find | fzy # interactive fuzzy search find | fzy --show-matches='foo' # non-interactive descending

Important note: after an upgrade, you have to set SINGLE_USER_MODE to true in your config.php; remember to modify after that if needed.

if ( var >= 10 ) { print "var is larger than or equal to 10"; } else if ( var <= 5 ) { print "var is smaller than or equal to 5"; } else { print "all other

pkg install nginx # FreeBSD pacman -S nginx # Archlinux You may need to compile for newer or disabled features. I don't recall when I needed this.

package's file, and re-install using force. sudo rm -rf /var/lib/pacman/local/man-pages-* sudo pacman -S --force man-pages

nokigiri is an html parser require 'nokigiri' html = '<html><title>foo</title></html>' doc = Nokigiri::HTML.parse(html) doc.css("title") # css-select elements

A web ui for network traffic introspection. graphs, stats, etc. sudo pacman -S ntop sudo ntop -i enp0s25 # visit: localhost:3000

var = "value" # assign variable (global) # under 'let' variables are local to current scope let local_var = "value" other_var = "value" 'with' exposes

pacaur -S bitlbee-discord sudo pkg install autoconf sudo pkg install autotools cd /usr/ports/irc/bitlbee-discord make sudo make install

Set fso = CreateObject ("Scripting.FileSystemObject") Set stdout = fso.GetStandardStream (1) Set stderr = fso.GetStandardStream (2) stdout.WriteLine "print

sudo pkg install postgresql96-server echo "postgresql_enable=\"YES\"" >> /etc/rc.conf sudo service postgresql initdb sudo service postgresql start WARNING:

wmic cpu wmic memcache get access # overall cpu usage typeperf "\Processor(_Total)\% Processor Time" # individual cpu usage typeperf "\Processor{*)\% Processor

7zip is a commandline/gui program to manage various archive formats. pacman -S p7zip # archlinux 7z x -o/path/out/ file.7z # extract to dir

WARNING: Kills python process if there is an error. (including maya). import ctypes memoryLoc = id( MyClassInstance ) ## Get Memory Location ref2Class

docker-compose up # runs command for each server in 'docker-compose.yml' docker-compose build # builds environment from 'docker-compose.yml' docker-compose

It's pretty straightforwards, just plug it in and mount it like a normal disk. sudo mount /dev/sdb /mnt/usb cp somebook.pdf /mnt/usb

light allows you to control your backlight brightness. sudo pacman -S light usermod -a -G video will # add your user to group 'video' light -S 100 # set

# send notification notify-send 'my title' 'my message' # repeat last message # (repeated calls navigate further back in history) dunstctl history-pop

pkgs.lib.makeLibraryPath [ pkgs.zlib ] # path from lib/ dirs "${pkgs.shared-mime-info}/share/mime/packages/freedesktop.org.xml" # pkg interpolated is the

Check for filesystem errors, and try to repair them. Similar to mount, fsck has different tools for different filesystems. For example fsck.btrfs, fsck

def func1 i = 0 while i<=2 puts "func1 at: #{Time.now}" sleep(2) i = i+1 end end thread = Thread.new{func1()} thread.join()

Builtin debugger module. See ruby debug. ruby -r debug yourmodule.rb A ruby interpreter, and debugger rolled into one. External library. See ruby pry.

~/.mutt/muttrc set query_command= "khard email --parsable %s" macro index,pager a "<pipe-message>khard add-email<return>" \ "Add sender to contacts (khard)"

# explicit allowlist Server { allow 192.168.1.0/24; # entire subnet deny all; }

colourized side-by-side diffs and pager. brew install git-delta delta 1.txt 2.txt # combined diff delta -s 1.txt 2.txt # side-by-side diff

The simplest possible build I could think of to test with. src/main.cpp #include <QtWidgets/QApplication> #include <QtWidgets/QPushButton> int main(int

imports bind all of the let variables defined within a file to a set. # ./foo.nix let a = "A" fn = x: x # ./bar.nix foo = import ./foo.nix {}; # foo expects

# /usr/local/etc/nginx/nginx.conf user www www worker_processes auto; worker_cpu_affinity auto; events { multi_accept on; worker_connections 1024; } http

If var = 1 Then stdout.WriteLine "condition A" ElseIf var = 2 Then stdout.WriteLine "condition B" Else stdout.WriteLine "condition C" End If d=weekday(date)

Pcmanfm is LXDM's file manager. It featureful, themable, and low on dependencies. A clear win. sudo pacman -S pcmanfm sudo pacman -S tumbler # image thumbs

Shellscripts for managing FreeBSD jails. # create a jail ezjail-admin install ezjail-admin create example.com 'em0|10.0.0.2' ezjail-admin start example

target windows lots more Xdotool itself does not record keybindings, but used with xbindkeys, you can bind keys to other keys. xdotool key Home ## Virtual

csv = CSV.new(File.read('out.csv')) csv.read # array of rows csv << [0, 1, 2] # append row to csv csv = CSV.new(<<~CSV, headers: true) id, name 123, foouser

patch a codebase patch directories diff -ruN new/ old/ > diff.patch # create patch patch -ruN -d working < diff.patch # apply patch patch files diff -u

sudo pkg install baikal nginx openssl # add user Will to group www pw groupmod www -M will Set up an httpd directive See `/usr/local/share/examples/baikal`

rdesktop lets you access windows over RDP from a X11 displayserver. rdesktop \ -P \ -z \ -x 1 \ -r sound:off \ -u 'domain.com\willp' \ -p 'password' \

gpart is a BSD tool for working with partition tables. Similar to linux's fdisk. camcontrol devlist # list all devices gpart list # print all disks (with

get information about the system running cmake. cmake_host_system_information( RESULT os_name QUERY OS_NAME ) if (os_name =

Fuzzy directory tree searching. pacman -S broot You'll also need to define the function br. # ~/.zshrc function br { local cmd cmd_file code cmd_file=$(mktemp)

$array = 'a','b','c' ForEach ($item in $array){ # do stuff } foreach ($dir in (get-childitem -recurse -path . -filter "package.py)) { cd $dir.DirectoryName;

issuing: systemctl enable avahi-daemon.service In order to run shairport, use the shairport.pl script. Can be run from dmenu, or a terminal window. Avahi-daemon

pinephone. server: domain.com/1025 - [x] connect to selected servers only - [x] use ssl for all the servers on this network username: you/freenode login_method:

The builtin linux gamepad driver. NOTE: linux kernel 3.17+ supports wired xbox one controller natively. sudo pacman -S xpad sudo modprobe xpad

mock = mock.Mock() mock.a() >>> <Mock id='1234567'> mock.a >>> <Mock id='7654321'> mock.a.return_value = 'hi' mock.a() >>> 'hi'

Some useful commands I use frequently :download-clear " clear completed downloads :tab-select " fuzzy-select tab to view :devtools " chrome dev tools :config-edit

A webserver. http://maratgaliev.com/bigsur-rails/ gem install thin -v '1.7.2' -- --with-cflags="-Wno-error=implicit-function-declaration"

You'll need the full 'mysql' package rather than just the 'mysql-client' in order to do this: CREATE USER 'backup'@'ip-address' IDENTIFIED BY 'password';

--mutt-query '%s'" macro index a "|abook --add-email\n" 'add sender to abook' macro pager a "|abook --add-email\n" 'add sender to abook'

NOTE: sourcing chruby's activation script from bashrc while installing rails was causing it to fail with CRITICAL: RUBYGEMS_ACTIVATION_MONITOR.owned?:

longer need to compile/patch with sidebar Install setup-x86.exe -q -P ^ mutt (source),^ msmtp,^ w3m,^ ncurses,^ libncurses-devel,^ abook,^ offlineimap,^ autobuild

very useful python library that aims to reproduce matplotlib using ascii so that it can be used on headless servers. Unfortunately, it seems you cannot render

to try command with/without (-n) # to use ip-addrs instead of hostnames tcpdump -n -i eth0 # piping tcpdump using (-l) tcpdump -l -i eth0 | grep "192.1"

You'll need to install mosh on both the client/server. Mosh works by first connecting over ssh, then starting and communicating via the mosh-daemon. There

Xrandr allows you to manipulate query and manipulate display settings. xrandr --output VGA-1 --mode 1920x1080 # set resolution xrandr # query outputs/modes

# visudo (/etc/sudoers) will ALL=(ALL): ALL # full sudo permissions to user %group ALL=(ALL): ALL # full sudo permissions to group members superuser ALL=(ALL)

Giara is a mobile reddit client for linux written in python. It works on the pinephone. pacaur -S giara-git

Function _AppendToPathEnv { param ( [Parameter (Mandatory=$true, position=2)] [String]$value ) # """ Appends a value to registry key, if it does not already

gitk within your terminal. tig -G'def foo' file.txt # show comits with code changes involving 'def foo' uu # stage/unstage file for commit ul # stage/unstage

ly/vagrant-lxc-wheezy64-2013-10-23' config.vm.define "db" do |node| # Set Container to use LXC config.vm.provider :lxc do |lxc| lxc.customize 'cgroup.memory.limit_in_bytes'

REM batch script arguments are listed numerically in order REM path to batch script echo %0 REM arguments, in order echo %1 echo %2 ... number of arguments

My router circa 2010. power button broke, but works if held down with tape. lan: dhcp: start: 192.168.1.100 start: 192.168.1.200 wan: port-forwarding:

A test framework for javascript. // ${project}/foo.js function sum(a, b) { return a + b; } // ${project}/foo.test.js const sum = require('./foo.js'); test('1

Windows executable info from linux. (ex: build version). pacaur -S pev # get windows executable version peres -v DDDA.exe | grep 'File Version' # ?? info

https://stackoverflow.com/questions/46690572/indent-content-based-on-headings h1, h1 ~ *, h2 ~ h1, h2 ~ h1 ~ *, h3 ~ h1, h3 ~ h1 ~ * { margin-left: 0px;

# shopify is:open is:pr -is:draft -reviewed-by:@me review-requested:@me +is:pr # only include pull requests -is:draft # remove drafts -is:approved # removes

REM (start-counting-at, iterate-by, stop-counting-at) FOR /L %%i IN (0, 1, 5) DO ( echo %%i ) FOR /D %%d IN (root will vagrant build) DO ( echo %%d ) FOR

Get link for current line in github. :GitLink

## Build Widgets layout = QtGui.QVBoxLayout() tab_layout = QtGui.QTabWidget() info_manager = QtGui.QPushButton('manager info') info_tasks = QtGui.QPushButton('task

regular vimrc. lua <<EOF -- some lua code EOF " ~/.config/nvim/init.vim " source vimrc from init.vim set rtp^=HOME/.vim so ~/.vimrc

replacement that is parallellized. TODO: split this into yarn-1 and yarn-2 pages yarn run ... # runs a command from your package.json

webbrowser that uses a headless firefox and renders using libcaca to a terminal. pacman -S go-bindata dep pacaur -S browsh browsh is intended t obe used with a

viu displays images within a terminal using squares. It even supports animated gifs! pacaur -S viu viu image.png # display image viu -w 50 image.png #

# ${PACKAGE}/source/conf.py # loaded from ${site-packages}/sphinx/themes/ html_theme = 'alabaster' Each theme may define it's own additional options. https://pypi

# permanently mount \\groot\movies to K: net use K: /delete /y # unmount K: (if mount created using net use)

docs intro tutorial https://www.tutorialspoint.com/read-and-write-wav-files-using-python-wave detailed tutorial https://nbviewer.jupyter.org/github/mgeier

pudb is a gui debugger. Watch a Variable watching a variable in pudb enters it into the GUI on the top right. Breakpoints are not added, it simply displays

NOTE: use VimPlugin: vim-test instead vim pyunit integrates nose into vim, allowing you to test functions/modules as you write/refactor straight from your

gpick is a colorpicker for linux. move the pointer over anywhere on screen, and hit spacebar to save a colorsample (in hex code). sudo pacman -S gpick

from jinja2 import Template template = Template('Hello {{ "will" | replace( "w", "W" ) }}' + last_name ) template.render( last_name='Pittman' ) ## Will

(new - old) / old * 100 # how much faster is 'new' than old (old - new) / old * 100 # how much slower is 'new' than old

mpc is a simple commandline client for mpd. mpc ls # list all files in music-dir mpc ls 'Adam and the Ants' # list files in subdir mpc update --wait 'Adam

tool to build apidocs for ruby. # Converts the object into textual markup given a specific `format` # (defaults to `:html`) # # == Parameters: # format::

Eclipse is a general purpose IDE - mostly used for Java and C++ development. # release types: R = Release SR = Service Release RC = Release Candidate M

Mono developed specifically for running within wine. # proton protontricks -s 'game name' # find game id protontricks -c 'wine64 uninstaller' ${APPID}

def validate_datetime( mydt ): if mydt.tzinfo != pytz.utc: raise TypeError('Expected a UTC datetime object with tzinfo set to UTC') ## get utcnow localized

$firstname = "darth"; $fullname = "$name vader"; // string interpolation Arrays in php are not homogenous, and include datatypes like associative arrays

'FOO' process.exit(1) # terminate with exit code 1 process.exitCode = 1 # use exitcode at termination let pid = 1234 process.kill(pid, 'SIGTERM') os.constants

import java.util.Map; Map<String> env = System.getenv(); // get all environment variables System.getenv("HOME"); // get environment variable "HOME" (returns

FOREACH( i IN list ) BREAK( n ) ENDFOREACH( i ) # Iterate over arguments FOREACH( i 1 2 3) # ... ENDFOREACH( i ) # Iterate over list SET( x "a" "b" "c"

library for working with HTTP requests. Rack expects code that works with it to use the method call which returns a list with status, headers, body. require "rack"

Scopes are custom queries that you define inside your Rails models. They return ActiveRecord::Relation objects. Scopes can be chained together. class Fruit

An ios comic book reader. Supports adding comics by HTTP server or WEBDAV. Settings > Website # create directory, add comics by directory

ios ebook reader, that can synchronize with calibre. NOTE: kybook2 supports more formats, and also syncs with calibre - choose opds - add calibre url with

docker-compose.yml version: '2' services: db: image: postgres:9.4.1 ports: - "5432:5432" rails: build: . command: bin/rails server --port 3000 --binding

Fn + Capslock # toggles fn-keys vs f-keys (at least logitech) # temporary: su echo 2 >> /sys/module/hid_apple/parameters/fnmode # permanent: echo "options

Python coroutines introduce eventloops to python's standard library (the reactor pattern). an eventloop is created a coroutine is added to the eventloop

snakeviz is pretty neat, but nowhere near as useful as runsnakerun. It does however support python3. python -m cProfile -o output.pstat file.py python

code --install-plugin vscjava.vscode-java-pack

NOTE: I cannot find any documentation (official, mirror, blog, ...) for visualstudio versions this old core en_visual_studio_express_2012_for_windows_

if (x == y) { // ... } else if (x > y) { // ... } else { // ... } switch (month) { case "september": // ... break; case "october": // ... break; default:

ruby's handling of regex looks similar to awk. if 'ruby' =~ /^ru/ puts 'ruby starts with 'ru' end lang = 'ruby' lang = %r'ruby' # regex string lang = /ruby/

80:8080 `# expose container 80 as host 80` \ -ti <image_name> /bin/bash # use created container sudo docker start <container_name> # run already created

% file.tex % (example copied from https://www.overleaf.com/learn/latex/Learn_LaTeX_in_30_minutes ) \documentclass[a4paper,12pt]{article} \begin{document}

headers = {'Authorization': 'token ....', 'User-Agent': 'octocat'} # alt - program-name conn = HTTPSConnection(self._domain, 443) conn.request('GET',

A very popular SQL relational database. mysql -u USER -h host.domain.com -P 3306 --password=PASS

Tool to convert markdown projects to google slides. npm install -g md2gslides # normal sudo npm install --unsafe-perm -g md2gslides # macos Create a slideshow

Overview of open tabs and splits. Like VimPlugin: NERDTree and VimPlugin: TagBar but for tabs/splits. :TMToggle " show splits-per-tab

A ruby linter. rubocop # test all files rubocop file.rb # test single file rubocop -D file.rb # print name of rule-failures # rubocop:disable RuleByName

old but universal filesystem constrained by partition and file size. Linux sudo fdisk /dev/sdb g # create gpt table n # create partition t # 11 (Microsoft

pip install python-daemon import daemon from daemon import pidfile context = daemon.DaemonContext( pidfile=pidfile.PIDLockFile('/var/run/perf-agent.pid')

sudo pip install python-musicpd import musicpd c = musicpd.MPDClient() c.connect('localhost', 6600) c.find('genre', 'Jazz') c.close() echo "currentsong"

css sources css selectors css units css cookbook css CSSDOM

net/cscope_vim_tutorial.html Change the locations vim searches for tags :set tags=./tags,c:/ruby/lib/tags

NOTE: I've ran into strange bugs when not using multiprocesing.queue Queues support both primitive objects and your own custom objects. I have found the

This worked very well for me until I started using wine/proton games. I then started having issues with keymaps. sudo pacman -S dkms pacaur -S steamos-xpad-dkms

Identify video source: ffmpeg -sources Identify ALSA (sound) sources arecord -l # you're looking for the card# and subdevice# # when using within ffmpeg:

runs excellently in steam proton! enb mods added using read-only overlayfs xbox one gamepad works using xpadneo driver make sure to configure nvidia driver

// example import using System; /// <summary>namespace for printing hello /// </summary> namespace helloworld { /// <summary> Runs HelloWorld /// </summary

line also requires 'Enter'. csharp using System; System.WriteLine("abc"); NOTE: tab completion selection up/down use arrowkeys, or vi-style Ctrl-(n/p)

option for authorization, my preference is Digest rather than Basic. # When using CarDAV/CalDAV, refer it to either cal.php, or card.php http://morpheus/cal

Bash can be extended to have more fancy glob, but using purely the default shell, this is what we're looking at. Technically, it is a subset of modern

A music player. Add music over SMB. Instead of using itunes, I've opted to use flacbox. It allows you to define an SMB share, and browse/download music

visualstudio 14 does not use commandline parameters to define features to install. Instead, you can export your configuration from a working visualstudio

Komorebi is a video wallpaper manager (or parallax etc). It doesn't play nice with i3, and it's a little bloated for my liking. pacman -S gendesk pacaur

Not requires an additional set of brackets. if (!(foo == "bar")) { ... } if (var == "one") { // ... } else if (var == "two") { // ... } else { // ... }

EA Origin is Electronic Art's game distrobution platform. Origin is not available natively on linux, but you can install it easily in wine. export WINEARCH="win32"

char_range = '^[a-zA-Z0-9{}]+'.format(re.escape('_ .()')) invalid_filenames = ( ['CON', 'PRN', 'AUX', 'NUL', 'CLOCK', '..', '.'] + ['COM{}'.format(i) for

Tools to interact with MKV files - splitting/merging them by chapter, etc. pacman -S mkvtoolsnix-cli mkvtoolsnix-gui mkvmerge input.mkv --split chapters:all

PyCharm is a proprietary python IDE. It facilitates refactoring, and provides a vi mode. File > Settings: Keymap: Navigate: File... # Ctrl T Alt + F12

For i = 0 To 5 response.write("The number is " & i & "<br />") Next For i=2 To 10 Step 2 some code Next Dim cars(1) cars(0)="Volvo" cars(1)="Saab" For

agrep is grep, but with additional fuzzy matching. sudo pacman -S tre # '-1' allows matches with 1 char different find . -name '.git' | agrep -1 'mui'

Modifiers are used to describe methods/attributes. They generally either limit access, or change how the item is treated by the JVM. class MyClass { //

A tool to control linux UI from the terminal. # list all window-ids by desktop-id wmctrl -l # ${window_id} ${desktop_id} ${hostname} ${window_title} wmctrl

# environment Tab # pip-boy Tab (hold) # flashlight v # toggle 3rd person v (hold) # crafting menu (on settlement) # combat r # reload r (hold) # show/hide

fdisk allows you to create mbr/gpt partitions on linux. sudo fdisk /dev/sdb d # delete partition table g # create gpt partition table p # print partition

" Iterate chars in string for item in split("abcd", '\zs') echom item endfor " Iterate Through Lists for l in ['a','b','c'] echo l endfor " Iterate numbers

Rails.logger. Investigate. Rails.logger = Logger.new(STDERR) Rails.logger.level = Logger::DEBUG Rails.logger.datetime_format = "%Y-%m-%d %H:%M:%S" class

Bai2 files are sent from banks with information about all of the transactions they have processed. bai2.groups.each do |group| group.accounts.each do |account|

- change from 5760x1080, then back, and click apply NOTE: Within dialog, use WASD to look up/down WARNING: The FOV needs fixing, and despite several fixes

defined requirements venv/bin/python I don't believe this exists, but you could use python tox to manage building virtualenvs built from setup.py

An asynchronous, language agnostic linting library. :ALEInfo " see ale config for current file let g:ale_sign_column_always = 1 let g:ale_open_list = 0

Sometimes, you don't have time to troubleshoot why a particular command is not working. You can get around this in two ways: rc.local method # /etc/rc

FreeBSD base installs have permissions assigned that prevent them from being completely deleted. # correc chflags -R noschg /usr/local/jails/{jail}/* sudo

tool that allows you to manage your installed ports on a freebsd system. I use it often when I am performing a freebsd-upate. portmaster -Da # upate all

Check for (EE) messages within /var/log/Xorg.0.log Try journalctl -b Try loading Kernel Mode Setting (KMS - setting resolution/depth in kernel rather than

import requests url = 'http://localhost:5000/test' headers = {'Content-Type': 'application/json; charset=utf-8'} json_data = '{"user": "me"}' reply = requests

from Qt import QtWidgets import myactions import mymodel import mock if not QtWidgets.QApplication.instance(): qapp = QtWidgets.QApplication() class D

TODO: more thorough Creates an empty nodejs react project with jest as a test-suite. pacman -S nodejs npx create-react-app my-app node_modules/ public/

Functional programmers talk about pipelines, or map/reduce. This is simply a way of passing the same value through several functions. import functools

vprof is my new favourite profiler. I think I actually like it more than runsnakerun. vprof -c cmh "file.py --cmd 1" # run profiler

code --install-plugin janjoerke.align-by-regex - Select Text - Ctrl + Shift + P: align by regex - type regex of text to align

bindfs lets you mount directories as other directories optionally, modifiying their permissions. Linux only, for BSD see nullfs. # cli bindfs -u www -g

module kldload fusefs.ko # FreeBSD modprobe fuse # Linux Fuse is normally used by another filesystem, ex: sshfs. Load fuse kernel module on boot # /boot/loader

modprobe loads kernel modules Temporarily load kernel modules sudo modprobe $KERNEL_MODULE Permanently load kernel modules at boot (in this case, deps

// statement1: run once before starting loop // statement2: while statement true, looping continues // statement3: execute once per loop for (int i=0;

especially when starting out. There are two types of expressions in bash, and each uses different operators. [ 123 -eq 123 ] # equal [ 123 -ne 321 ] # not equal

Run archlinux on digitalocean. Not officially supported. curl -O https://raw.githubusercontnet.com/robsonde/digitalocean_builder/master/make_image.sh chmod

The %ERRORLEVEL% variable is roughly equivalent to bash's $?. A process-exit code of 0 indicates that a process completed successfully. some-command.exe

Building ruby gems with C extensions. INCLUDE/LIB directories (extconf.rb params). # https://bugs.ruby-lang.org/issues/7173 ruby \ --with-opt-dir /opt/package

A program to remap joypad buttons to keyboard buttons. NOTE: archlinux no longer has qjoypad in it's repo. See antimicro. sudo pacman -S qt4-base qt-chooser

Text to speech in vim. Useful for oral surgery. Built overtop of google's Speech API. <leader>s " read current line out loud <leader>r " record voice and

pyautogui exposes cross-platform mouse/keyboard/window controls. Like autohotkey, but totally portable. Usage is extremely simple. For example: pyautogui

Embeds python executable within a rust program. Creates single file (statically linked) executable. Supports linux, mac, windows. Install rust cargo install

from setuptools import setup setup( # ... install_requires=['six', 'pyyaml'], # installed before `python setup.py install` tests_require=['pytest', 'mock']

# ~/.talon/user/**/*.talon os: linux # mac, linux - vim: # voice command for word 'vim' user.system_command('vim') # run command key(ctrl-t) # insert keys

gpicview is a gui image viewer, similar to microsoft's image viewer. You can preview, rotate an image etc. pacman -S xdg-utils xdg-mime default gpicview

:run => 'always' # copy a file into vagrant config.vm.provision "file", \ source: "sshkeys/ansible_server/id_rsa.pub" \ destination: "~/.ssh/id_rsa.pub"

<video width="640x480" controls> <source src="my/video.mp4" type="video/mp4"> Your browser does not support the video tag. </video> </body> </html>

You can generate SSL certs using openSSL. These certificates can be self-signed (not very secure), or signed by a certificate authority (the purpose of

block. cells can be selected using their left-margin. The can be shifted up, down, deleted etc. python matplotlib can be used within cells to render diagrams

:set colors.webpage.bg black You can view the various available settings using :set colors.<TAB> " interactively test the settings you'd like disable javascript

ran with little tweaking) The following settings ## are what I ended up using: export SSH_AUTH_SOCK="/tmp/gpg-gXLJ5S/S.gpg-agent.ssh"

By default, ping is not permitted within jail. Test using netcat nc -z www.google.ca 80 Alternatively, configure jail to allow raw sockets # /etc/jail

sudo pacman -S cups pacman -S capt-src # 1) add your user to group 'lp' gpasswd -a will lp # 2) reboot sudo reboot # 3) connect printer via usb # 4) enable/restart

A terminal with tabs. Occasionally available in package repos. # Solarized Dark/Light # -------------------- #Mrxvt.background: #002B36 Mrxvt.background:

LiveReload plugin for sphinx. pip install sphinx-autobuild By Hand sphinx-autobuild docs docs/_build/html # watch changes in `docs`, build in `docs/_build/html`

Flake8 seems to be the normal solution used. It enforces the pep8 style on your project. Add a setup.cfg to the root of your project. [flake8] max_line_length

mybutton.h src/ main.cpp mybutton.cpp main.pro main.pro QT += widgets core gui SOURCES += src/main.cpp src/mybutton.cpp HEADERS += include/mybutton.h INCLUDEPATH

include/mybutton.h #ifndef MYBUTTON_H #define MYBUTTON_H #include <QtWidgets/QPushButton> class MyButton: public QPushButton { Q_OBJECT; public: explicit

Deleting layouts does not always work well, you'll have much more predictable results if you put your layout into an empty QWidget, then delete the QWidget

Dim var var="my var" Dim var var=1 Arrays have a fixed size. It must be declared at creation. Dim names(2) names(0)="will" names(1)="russ" names(2)="vader"

Database client that is accessed through vim. Supports several database types. Plugin 'https://github.com/vim-scripts/dbext.vim' let g:dbext_default_profile_mayadb

empathy is an IRC/misc chat program built overtop of gnome telepathy. You may use empathy to setup polari, or on it's own (it's quite mobile friendly). network:

Bittorrent Sync is a tool to keep two file systems in sync. Like dropbox, but encrypted, and hosted on your computer. NOTE: This has been renamed 'resilio

# basics jls # list all jails jexec ${jail} # enter jail service jail start ${jail} # start jail jexec ${jail} <command> # run command in jail jexec ${jail}

session = boto3.session.Session() client = session.client( service_name='S3', region='nyc', # do spaces region code endpoint_url='https://nyc.digitaloceanspaces

The observer pattern is used when several objects need to to be notified of changes to one object. (a log-watcher, weather-data, chatroom, ...). Instead

A third party debugger for ruby. Modeled after gdb. TODO: add quick reference notes -- ex: how to start byebug? gem install byebug

System.getProperty("os.name"); // System.getProperty("os.version"); // System.getProperty("os.arch"); // check os family osname = System.getProperty("os

xev displays the keycode produced by a keypress within Xorg. For TTYs, see showkey. NOTE: You also can type characters following cat -E to obtain raw-ansi-escape

The dotnet framework includes a C# compiler, and build system. dotnet new console -o helloworld cd helloworld dotnet run # run program dotnet publish -r

:version " list vim build params/features :checkhealth " list info about interpreters, parsers, etc. Neovim has it's own embedded terminal! :terminal "

neovim doesn't have an official UI, but it is built with a client-server model so that UIs can be built overtop of it. Essentially gvim for neovim. :GuiFont

allows you to enter multiline messages. /script install multiline.pl # alt+enter as newline /set plugins.var.perl.multiline.magic_paste_only on /key bind

A commandline runtime environment for javascript. node script.js # run script node # interpreter

By default, bash continues running when errors occur. You can change this behaviour by adding the following line to your bash script (at the top). set

See python threading, this interface duplicates it. See python concurrency for more examples of concurrency methods. import multiprocessing class Worker(multiprocessing

An LGPLv3 xbox360 controller emulator for windows. visit github and use download link from README run, there is no install click the rightmost "issues"

nginx -t # test all nginx configfiles nginx -t -c /path/nginx.conf # test a specific nginx config # /usr/local/etc/nginx/nginx.conf user www www; worker_processes

http { upstream my_upstream { server server1.example.com; server server2.example.com; } server { listen 80; location / { proxy_set_header Host $host; proxy_pass

Sphinx provides the _static directory for css, javascript, etc. ${PROJECT}/_static/ css/*.css js/*.js html_static_path = ['_static'] html_css_files = ['css/custom

WARNING: mysql-python only supports python2. See python pymysql instead. (as a bonus, it's actually easier to install) ## Conect to Database import MySQLdb

interact with zipfiles with zipfile.ZipFile('/path/file.zip', 'w') as archive: for (root, filenames, dirnames) in os.walk('/some/path'): root = root.replace('\\'

Coloured interpreter with autocomplete. pry # start pry interpreter ruby -r pry -e 'binding.pry' # start pry interpreter from specific ruby interp See

network share, and instruct encfsmp to use that. # temporarily mount share, we want to remember credentials NET USE x: \\<hostname>\share /USER:<user> <password>

Library and commandline tool that abstracts linux/windows/macos keyrings to save/retrieve passwords. sudo pacman -S python-keyring # set password (interactive)

Keyservers allow you to share your public keys, so that others can encrypt messages intended for you. gpg --send-keys keyname # upload key to keyserver

Mutt can send emails itself. # ~/.mutt/muttrc set ssl_force_tls = yes set smtp_url = "smtps://<your_email>@smtp.gmail.com:465/" set smtp_pass = "`<com

JSON web tokens are a way of authenticating users. All registered claims { "iss": "server.domain.com", // issuer(optional): principal of issuer (generally

WARNING: This is no longer the latest version of Junit import junit.framework.Test; import junit.framework.TestCase; import junit.framework.TestSuite;

Rails ActiveJob middleware to enable cursor-based iterated jobs. https://github.com/Shopify/job-iteration # https://github.com/Shopify/job-iteration/b

which returns objects representing other types (ex: Droplet). You can also use the types directly for resource creation. # show droplets import digitalocean

See :help feature-list for full list of platforms if has('gui_running') " If running gvim if has('unix') " If running on *nix if has('win32') " If running

iterators and codeblocks mylist = ["dog", "cat", "bear"] mylist.each { |x| puts x } # print each entry in 'mylist' Similar to a function my_codeblock =

Search file contents. grep <dir> \ -C3 `# show 3x lines before/after each match` \ -l `# show only matched files` \ -i `# case insensitive search` \ -v

A featureful gpu accelerated terminal emulator. clear_all_shortcuts yes macos_option_as_alt yes macos_quit_when_last_window_closed yes enable_audio_bell

URLs (not domains) using rules. It does so using simple PCRE regex expressions. location / { # redirect /nginx-tutorial? to /somePage.html rewrite ^/nginx-tutorial

ages/ --ignore-dir=tests/ --ignore-file=is:ctags # exact filename match 'tags'

compatible with docutils. pip install sphinx-markdown-tables # ${PROJECT}/source/conf.py extensions = ['sphinx_markdown_tables'] | Desc | Url | |------|

with the sync jobs you would like to start. sync { default.rsync, source = '/home/vagrant/progs/maya/m2014', target = '/devsync/mfw/scripts', exclude =

to write a file. You can even split your rules withing multiple files and source them. nft list tables # list tables nft list table 'inet' 'my_table' # list

headphone jack is not recognized using this audiocard. Proprietary Drivers are only available for the rev1.1 motherboard. You can use hda-jack-retask to remap

custom dev ruleset. I believe I solved this with custom udev rules while using wireguard Create/replace /etc/resolv.conf nameserver 192.168.1.1

'anybody' rm ~/.Xauthority touch ~/.Xauthority # Xorg will rebuild Xauthority using default perms startx /usr/bin/i3 # choose Xsession you want to start You

capacity over several conditions. Each expression is compared against the value using the === operator. case capacity when 0 # exact match "..." when 50, 100 #

HOST system. If an IP gets blocked in a jail, it's blocked on the host. Using 'pfctl -t <talbename> -T show' demonstrates the shared rules. Instead, I

Standard libvirt viewer. Also see spice . sudo pacman -S virt-viewer No install required remote-viewer spice://127.0.0.1:${SPICE_PORT} & disown remote-viewer

ipdb is an enhanced version of pdb. Some advantages: syntax highlighting tab-completion view entire file (not just snippet) sudo pip install ipdb All of

execute-context-scoped: # variable scoped to function, or module if not defined in function block-scoped: # variable scoped to the { ... } contents var

tiling window manager for windows, inspired by i3. Install visualstudio 16 (2019). vs_community.exe --passive ^ --add Microsoft.VisualStudio.Workload.VCTools

// init vars // // exit-condition // // operation // for ( n=0, i=100 ; n!=i ; ++n, --i ) { // whatever here... } arrays int items[] = {11, 14, 25}; std::for_each(int

Optparse is a basic commandline parser for ruby. It is builtin to the standard library. require 'optparse' options = {} OptionParser.new do |opt| opt.on("-i"

WARNING: in vim, 0 is FALSE, and 1 is TRUE. WARNING: comparing mis-matching types will return FALSE " If Statement if var == 1 echo var elseif var == 2

configuration combines dnsmasq with it's own customization layers. # set pihole to use opendns pihole -a setdns 208.67.222.222,208.67.220.220 # update blocked domain

By default OSX uses the BSD-variations of the coreutils. sudo shutdown -h now # shutdown right away sudo scutil --set HostName <yourhostname> # set hostname

sshguard_enable="YES" sshguard_whitelist="/etc/sshguard.whitelist" You can also use sysrc to programmatically access and control these variables, even append

Download/Install Install driver associated with kernel LTS kernel pacman -Rsd linux-headers # remove headers not associated with your kernel pacman -S

abook is a CLI contact manager. It is simple, gets the job done, and can be integrated into mutt. sudo pacman -S abook ## abook for arch has already been

readability. SELECT * FROM sometable\G # also, you can use less as your pager pager less -SFX mysql uses gnu readline. To enable vi mode simply: linux, macos<=10

A Job Queue Manager/Executor for ruby with a web interface. Create a class to represent a job to be consumed. Jobs can have dependencies on other jobs

There are 3x types of comments in csharp. // inline comment /* multiline * long * comment */ In C#, docstrings are written above the item being documented

closing element ` jsx`{js-expression}` // evaluate js expression You can also use JSX directly let box = <Box> { // .. } </Box>;

GUI irc client. Designed with mobile in mind. Simpler mobile-friendly UI built overtop of empathy. sudo pacman -S polari sudo pacman -S empathy Polari

if [[ "$var1" = "2" ]] ; then echo 'condition 1' elif [[ "$var1" = "3" ]] ; then echo 'condition2' else echo 'no conditions met' fi case $var in -h|--help)

int x = 1 + 1; int x = 1 - 1; double x = 10 / 3; // returns 3.0 double x = 10.0f / 3.0f; // returns 3.3333333 double x = 10.0 / 3.0; // returns 3.3333333333333335

creating a repository (to be synchronized to/from) cd /path/projectname git init --bare create a project (to work in, push/pull from repo) cd /path/projectname

date formats the current date, or translates between date formats. You may also be interested in bsd date. pacman -S dateutils date -d 'last monday 2pm'

Archlinux: sudo pacman -S virtualbox-host-modules-arch Archlinux sudo pacman -S virtualbox-guest-modules-arch vagrant plugin install vagrant-libvirt E

XMPP chat within vim. I only ever used this once, but it does work. Cygwin install was straightforward except that the xmpppy python module was missing

/usr/share/slim/themes/archlinux-soft-grey #THIS WON'T WORK IN XMONAD Slim no longer uses .xinitrc for loading xsessions. Instead it scans '/etc/X11/Sessions'. # ~/

>"\t]*|www\.[-a-z0-9.]+)[^ .,;\t>">\):] COMMAND xdg-open %s # ~/.mutt/muttrc macro pager \cb <pipe-entry>'urlview'<enter> \ 'Follow links with urlview'

A python library for reading RSS feeds. Reading a Feed import feedparser data = feedparser.parse('/var/tmp/out.xml') data = feedparser.parse('https://rss

Instructions for building customized Archlinux install media. sudo pacman -S archiso mkdir ~/dev cp -Ra /usr/share/archiso/configs/releng ~/dev/archiso

package for the most popular python extensions for vim. " use ALE or COC let g:pymode_lint = 0 " use standalone ropemode let g:pymode_rope = 0 let g:pymod

def above_ten(num): return num > 10 def below_fifteen(num): return num < 15 # solution-1 r = range(20) for f in (above_ten, below_fifteen): r = filter(f

needsterminal; Force attachments to use mailcap when pressing enter (default m). (Without this text/calendar files will show in pager, ignoring mailcap) # ~/.mutt/muttrc

(presentation-tier) -> (business-tier) -> (data tier) # react.js -> node.js -> cassandra Each server-app behaves like a non-distributed system. Data is

postgres enables you to use pgsql or plsql script. I have barely used this, and only ever to compensate for items like roles which cannot use IF NOT EXISTS. \set

name = "You" # create template, and render it using locals template = ERB.new("hello <%= name %>") template.resuilt(binding) <!-- comment --> <%# comment %>

&bitlbee channel, do not use the / prefix for commands. Example help identify <password> # ... NOTE: does not apply to you if using znc Add server to ZNC

dataset is having another server, and using zfs send. But if you're looking for a cheaper solution, you can use tar. # Create a snapshot of your dataset

oryx configurator https://ergodox-ez.com/pages/oryx keyboards as ascii art https://www.asciiart.eu/computers/keyboards

com/questions/29583664/how-do-you-enable-powershell-to-interpret-ansi-color-codes-when-using-get-conten

multiple directories, simply write multiple .coverage files, them combine them using coverage combine .coverage1 .coverage2 ... setup.cfg [aliases] test=pytest

emby is opensource software to stream your movies, tv, music etc. sudo pacman -S emby-server sudo systemctl enable/start emby-server # /etc/rc.conf em

Registers are basically clipboards named after alphabet characters Their contents are persisted between vim restarts. @" # unnamed register (yank, delete

javac is java's builtin compiler. You'll need to install a jdk to get javac. sudo pacman -S jdk-openjdk # archlinux sudo apt-get install java-devel # debian

/etc/nginx/nginx.conf http { gzip on; gzip_comp_level 9; gzip_proxied any; gzip_types application/json; # ... } By default, your payload will still be

# downloads dir session = # tempfiles? check_hash = yes # If cannot get sources, allow option for non-encrypted #encryption = allow_incoming,try_outgoing

ActiveSupport::Notifications.subscribe("") do |name, started, finished, unique_id, data| puts name, started, finished, unique_id, data end # name: name

curl \ -H "Content-Type: application/json" \ -H "Authorization: bearer ${token}" \ -X POST \ -d '{"query": "query {repository(owner: \"willjp\", name:

Instructions to create a bootable windows usb NOTE: don't do this from linux. download the iso-builder utility. Run on windows and it will automate the

The builtin functions docs are hard to search. Run to get a list, then search documentation here. from docs curl -L https://nixos.org/manual/nix/stable

code-reuse Good OO Design favours composition over inheritance. Excellent sources of information

next # continue to next loop redo # redo current loop break # exit loop 3.times { puts "hi!" } 3.upto(10) { |i| puts i } ('a'..'e').each {|char| puts char

Builtin ruby module, that provides an interactive debugger. Run the ruby interpreter in debugger mode. Stops before first line is run, presents debugging

(java native access) platform info, and access to various platform internals. It is similar to ctypes in python. <!-- https://mvnrepository.com/artifact/net

for 'smbguest' sudo smbpasswd -a smbguest # set password for smbguest (when used for samba)

Chocolatey is a community-managed package manager for windows. ## Paste the following in cmd: @powershell -NoProfile -ExecutionPolicy unrestricted -Command

from PySide2 import QtGui, QtWidgets, QtCore import signal import sys def change_mousepos(): current_pos = QtGui.QCursor.pos() y_val = current_pos.y()

clink is a port of gnu-readline's features to windows. oh yes. that means: vi-mode on the commandline control-l clear screen tab-completion more... ~/

type exit to exit the x server If the screen goes black, you can blindly use a different virtual console (Ctrl+alt+F2) log in as root, and issue 'pkill

Most cli related code resides in: process module console module node script.js foo bar baz process.argv // string array of cli args process.exit(1) //

TODO: I have code for handling these in TMA repo. sudo useradd --create-home will # create user will, and home sudo useradd --system build # no home dir

environment export CLASSPATH=$CLASSPATH:/usr/share/java/bsh.jar # GUI (have not used) java bsh.Console # CLI java bsh.Interpreter java bsh.Interpreter file.java

Open Broadcaster Studio (OBS studio) for short is a multi platform screen recording software package. sudo pacman -S obs-studio Trailer: Settings - Video

vms vagrant destroy # delete vm Boxes are the base-install images that you use as a starting point for your vagrant install. vagrant box add freebsd/FreeBSD-11

plots data from stdin, directly on terminal. It is built with tools like ps, vmstat and others in mind. ttyplot only tracks a single resource in x/y. You

======== F2/F3 # cycle themes rtv --list-themes rtv --theme colorblind-dark Use your mailcap to determine how you'd like to view specific files.

def find(data: List[Dict], id_: str): """ Search list-of-dicts for a dict with `id_` Args: data: ``(ex: [{'id_': '0bac5130b4464968a94c5641306b347e'},

view/navigate syntax-highlighted manpages within vim, optionally use instead of man. :Man vim # table of contents within quickfix function ManToc() """

Karabiner is a free program that allows you to bind custom actions to keypresses on macos. (like xmodmap for macos). brew install karabiner-elements Permissions

tar is a tool to create compressed file archives. # uncompressed tar -cvf file.tar directory/ tar -cvf /out/file.tar \ -C /some/in/dir `# change directory

universal code grep (ucg) is a modern search and search replace tool. It is similar to ripgrep, but supports PCRE2 (lookahead/lookbehind, multiline, etc)

Offline documentation viewer/aggregator. Abstracts documentation from several sources so that they can be viewed offline. This can then hook into your terminal

title <foo/bar>` # alternate title for link You can also use intersphinx to refer to other pages using :ref:. See https://www.sphinx-doc.org/en/master/usag

coverage # run coverage coverage run -m pytest coverage run \ --source path/A \ --source path/B \ --omit path/C coverage reports # combine coverage multiple

ar-paypal.git@master pip list # list installed pip search <package> # deprecated import site site.getusersitedir() # pip install --user packages installed

backports, rather than upgrading your whole system. # /etc/apt/sources.list # configure backpourts source deb http://backports.debian.org/debian-backports squeeze-backports

http://pypi.python.org/pypi/mypackage/0.1.0 # on success, page accessible python setup.py sdist # create source dist python setup.py sdist upload -r pypi # upload

displays first completion as you type. Install using zsh antigen. # colour of preview text ZSH_AUTOSUGGEST_HIGHLIGHT_STYLE=8 # do not try to complete lines

Required for Xbox One Controller. The following is temporary, make permanent using sysfs. temporary sudu -i echo 1 > /sys/module/bluetooth/parameters/disable_ertm

fpath=(~/.zsh/completion $fpath) # add completion dir to $fpath autoload -U compinit # init autocompletion compinit The cleanest way to reload your autocompletion

to virtual machines. sudo pacman -S spice-gtk virt-viewer Go to downloads page (https://www.spice-space.org/download.html) and install: spicy # gui-chooser

trams stop for ~8min (8s in real time). it is not clear yet if this schedule is consistent day-to-day. See detailed map: https://www.gamepretty.com/el

sudo pacman -S pcsx2 Install bios to ~/.config/PCSX2/bios. See /mnt/games/PS2/__bios__. You'll also need to adjust the plugins libgsnull renders as a black

See java modifiers for more details. class MyClass { int number = 0; static int cls_num = 10; final int maxhealth = 10; // attempts to change value raise

import java.time.LocalDateTime; import java.time.ZoneOffset; LocalDateTime dt = LocalDateTime.now(); // current datetime (localtz) LocalDateTime dt_utc

Describe and build environments to run ruby code. mkdir myproject && cd myproject echo 2.6.5 > .ruby-version # set 'chruby' ruby version bundle init #

A C implementation of couchbase lite with bindings for python, nim, and rust. An alternative implementation of couchbase-lite (couchbase only supports

import urllib # split url into parts urllib.parse.urlparse('http://domain.com/resource/path;params?q=foo&bar=baz#fragment') >>> urllib.parse.ParseResult(

SQLite uses SQL. sqlite3 # in-memory db sqlite3 new.db # open/create db You can add sqlite commands to your sqliterc. # ~/.sqliterc .mode column .header

NOTE: you can connect to multiple discord accounts simultaneously account list " list all accounts For more details, see bitlbee discord: configuration

experience: - enemies are finite, be very careful with how you spend experience. hoard exp any chance you get. movement speed: - remove equipment/items

A tool to create a static-html copy of a MediaWiki website with working links (but no css, no search). # Install htmldata cd /home/will/dev # Install htmldata

Skip the AUR package and use official installer. nix-store --gc nix-store --verify nix-channel --update First, try updating your channel and rebuilding

logrotate is a program to rotate/compress logs. pkg install logrotate # FreeBSD pacman -S logrotate # Archlinux /var/log/messages { rotate 5 weekly postrotate

brew cask install amethyst Config > System and Preferences > Security & Privacy: (Tab) Privacy: Accessibility: - [+] /Applications/amethyst Defaults mod1

The powershell has an rcfile, just like a real shell. type $profile to see where your shell is reading it from. # install powershell readline module Install-Module

msmtp is a simple smtp server. SMTP servers are used to send mail. sudo pacman -S msmtp touch ~/.msmtprc chmod 600 ~/.msmtprc # send test message echo

pyjwt tokens are used for token-based authentication. they are stateless. import jwt secret = 'my-serverside-secret' data = { "iss": "auth.domain.com"

ffmpeg <global-flags> \ <inputfile flags> -i /path/to/file.mov \ <inputfile flags> -i /path/to/file.mov \ <outputfile flags> /path/to/outputfile.mov Concat

~2015 and are likely out of date. It was considerably less effort just to use libre office, which is available everywhere. ### add 32 bit prefix to wine:

CloudWatch is AWS's notifications/alarms system. import boto3 session = boto3.session.Session() client = session.client( 'cloudwatch', region_name='us-east-1'

WARNING: Date is not a feature of bash, but part of the gnu or bsd coreutils. That means that it is not as portable as you might like. gnu-coreutils date

official repos. NOTE: LXDM does not seem to have any official docs, nor a man page. sudo pacman -S lxdm pacaur -S lxdm-themes sudo systemctl enable lxdm /etc/lxdm/lxdm

python library to interact with JSGF files. import jsgf # add rules to a grammar grammar = jsgf.Grammar() rule = jsgf.PublicRule('direction', jsgf.AlternativeSet('up'