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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