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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