Initial commit.

.github/README.md

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+cheatsheets
+===========
+This repository contains community-sourced cheatsheets to be used with
+[cheat][] and similar applications.
+
+### Format ###
+Cheatsheets are plain-text files that begin with an optional "front matter"
+header in YAML format. The header may be used to assign "tags" to a sheet, and
+to specify the sheet's syntax (`bash`, `python`, `go`, etc).
+
+When possible, cheatsheets should conform to this format:
+
+```sh
+---
+syntax: bash
+tags: [ vcs, development ]
+---
+# To stage all changes in the current directory:
+git add --all
+
+# To commit staged changes:
+git commit -m "chore: updated the README"
+```
+
+
+[cheat]: https://github.com/cheat/cheat

7z

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+7z
+A file archiver with highest compression ratio
+
+Args:
+a       add
+d       delete
+e       extract
+l       list
+t       test
+u       update
+x       extract with full paths
+
+Example:
+7z a -t7z -m0=lzma -mx=9 -mfb=64 -md=32m -ms=on archive.7z dir1
+
+-t7z        7z archive
+-m0=lzma    lzma method
+-mx=9       level of compression = 9 (ultra)
+-mfb=64     number of fast bytes for lzma = 64
+-md=32m     dictionary size = 32 Mb
+-ms=on      solid archive = on
+
+7z exit codes:
+0       normal (no errors or warnings)
+1       warning (non-fatal errors)
+2       fatal error
+7       bad cli arguments
+8       not enough memory for operation
+255     process was interrupted

ab

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+# send 100 requests with a concurency of 50 requests to an URL
+ab -n 100 -c 50 http://www.example.com/
+
+# send requests during 30 seconds with a concurency of 50 requests to an URL
+ab -t 30 -c 50 URL http://www.example.com/

alias

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+# Show a list of your current shell aliases
+alias
+
+# Map `ll` to `ls -l` (Can be used per session or put inside a shell config file)
+alias ll='ls -l'

ansi

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+# Reset
+Color_Off='\e[0m'       # Text Reset
+
+# Regular Colors
+Black='\e[0;30m'        # Black
+Red='\e[0;31m'          # Red
+Green='\e[0;32m'        # Green
+Yellow='\e[0;33m'       # Yellow
+Blue='\e[0;34m'         # Blue
+Purple='\e[0;35m'       # Purple
+Cyan='\e[0;36m'         # Cyan
+White='\e[0;37m'        # White
+
+# Bold
+BBlack='\e[1;30m'       # Black
+BRed='\e[1;31m'         # Red
+BGreen='\e[1;32m'       # Green
+BYellow='\e[1;33m'      # Yellow
+BBlue='\e[1;34m'        # Blue
+BPurple='\e[1;35m'      # Purple
+BCyan='\e[1;36m'        # Cyan
+BWhite='\e[1;37m'       # White
+
+# Underline
+UBlack='\e[4;30m'       # Black
+URed='\e[4;31m'         # Red
+UGreen='\e[4;32m'       # Green
+UYellow='\e[4;33m'      # Yellow
+UBlue='\e[4;34m'        # Blue
+UPurple='\e[4;35m'      # Purple
+UCyan='\e[4;36m'        # Cyan
+UWhite='\e[4;37m'       # White
+
+# Background
+On_Black='\e[40m'       # Black
+On_Red='\e[41m'         # Red
+On_Green='\e[42m'       # Green
+On_Yellow='\e[43m'      # Yellow
+On_Blue='\e[44m'        # Blue
+On_Purple='\e[45m'      # Purple
+On_Cyan='\e[46m'        # Cyan
+On_White='\e[47m'       # White
+
+# High Intensity
+IBlack='\e[0;90m'       # Black
+IRed='\e[0;91m'         # Red
+IGreen='\e[0;92m'       # Green
+IYellow='\e[0;93m'      # Yellow
+IBlue='\e[0;94m'        # Blue
+IPurple='\e[0;95m'      # Purple
+ICyan='\e[0;96m'        # Cyan
+IWhite='\e[0;97m'       # White
+
+# Bold High Intensity
+BIBlack='\e[1;90m'      # Black
+BIRed='\e[1;91m'        # Red
+BIGreen='\e[1;92m'      # Green
+BIYellow='\e[1;93m'     # Yellow
+BIBlue='\e[1;94m'       # Blue
+BIPurple='\e[1;95m'     # Purple
+BICyan='\e[1;96m'       # Cyan
+BIWhite='\e[1;97m'      # White
+
+# High Intensity backgrounds
+On_IBlack='\e[0;100m'   # Black
+On_IRed='\e[0;101m'     # Red
+On_IGreen='\e[0;102m'   # Green
+On_IYellow='\e[0;103m'  # Yellow
+On_IBlue='\e[0;104m'    # Blue
+On_IPurple='\e[0;105m'  # Purple
+On_ICyan='\e[0;106m'    # Cyan
+On_IWhite='\e[0;107m'   # White

apk

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+# Install a package
+apk add $package
+
+# Remove a package
+apk del $package
+
+# Update repos
+apk update
+
+# Upgrade all packages
+apk upgrade
+
+# Find a package
+apk search $package

apparmor

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+# Desc: Apparmor will protect the system by confining programs to a limited set of resources.
+
+# To activate a profile:
+sudo aa-enforce usr.bin.firefox
+# OR
+export _PROFILE_='usr.bin.firefox' sudo $(rm /etc/apparmor.d/disable/$_PROFILE_ ; cat /etc/apparmor.d/$_PROFILE_ | apparmor_parser -a )
+
+# TO disable a profile:
+sudo aa-disable usr.bin.firefox
+# OR
+export _PROFILE_='usr.bin.firefox' sudo $(ln -s /etc/apparmor.d/$_PROFILE_ /etc/apparmor.d/disable/ && apparmor_parser -R /etc/apparmor.d/$_PROFILE_)
+
+# To list profiles loaded:
+sudo aa-status
+# OR
+sudo apparmor_status
+
+# List of profiles aviables: /etc/apparmor.d/

apt

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+# To search a package:
+apt search package
+
+# To show package informations:
+apt show package
+
+# To fetch package list:
+apt update
+
+# To download and install updates without installing new package:
+apt upgrade
+
+# To download and install the updates AND install new necessary packages:
+apt dist-upgrade
+
+# Full command:
+apt update && apt dist-upgrade
+
+# To install a new package(s):
+apt install package(s)
+
+# To uninstall package(s)
+apt remove package(s)

apt-cache

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+# To search for apt packages:
+apt-cache search "whatever"
+
+# To display package records for the named package(s):
+apt-cache show pkg(s)
+
+# To display reverse dependencies of a package
+apt-cache rdepends package_name
+
+# To display package versions, reverse dependencies and forward dependencies 
+# of a package
+apt-cache showpkg package_name

apt-get

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+# Desc: Allows to update the operating system
+
+# To fetch package list
+apt-get update
+
+# To download and install updates without installing new package.
+apt-get upgrade
+
+# To download and install the updates AND install new necessary packages
+apt-get dist-upgrade
+
+# Full command:
+apt-get update && apt-get dist-upgrade
+
+# To install a new package(s)
+apt-get install package(s)
+
+# Download a package without installing it. (The package will be downloaded in your current working dir)
+apt-get download modsecurity-crs
+
+# Change Cache dir and archive dir (where .deb are stored).
+apt-get -o Dir::Cache="/path/to/destination/dir/" -o Dir::Cache::archives="./" install ...
+
+# Show apt-get installed packages.
+grep 'install ' /var/log/dpkg.log
+
+# Silently keep old configuration during batch updates
+apt-get update -o DPkg::Options::='--force-confold' ...

aptitude

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+# To search for packages:
+aptitude search "whatever"
+
+# To display package records for the named package(s):
+aptitude show pkg(s)
+
+# To install a package:
+aptitude install package
+
+# To remove a package:
+aptitude remove package
+
+# To remove unnecessary package:
+aptitude autoclean
+

aria2c

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+# Just download a file
+# The url can be a http(s), ftp, .torrent file or even a magnet link
+aria2c <url>
+
+# To prevent downloading the .torrent file
+aria2c --follow-torrent=mem <url>
+
+# Download 1 file at a time (-j) 
+# continuing (-c) any partially downloaded ones
+# to the directory specified (-d)
+# reading urls from the file (-i)
+aria2c -j 1 -c -d ~/Downloads -i /path/to/file

asciiart

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+# To show some text in ASCII Art:
+
+figlet Cheat
+#  ____ _                _
+# / ___| |__   ___  __ _| |_
+#| |   | '_ \ / _ \/ _` | __|
+#| |___| | | |  __/ (_| | |_
+# \____|_| |_|\___|\__,_|\__|
+#
+
+
+# To have some text with color and other options:
+# Show with a border
+toilet -F border Cheat
+# Basic show (filled)
+toilet Cheat
+#   mmm  #                      m
+# m"   " # mm    mmm    mmm   mm#mm
+# #      #"  #  #"  #  "   #    #
+# #      #   #  #""""  m"""#    #
+#  "mmm" #   #  "#mm"  "mm"#    "mm
+#

asterisk

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+# To connect to a running Asterisk session:
+asterisk -rvvv
+
+# To issue a command to Asterisk from the shell:
+asterisk -rx "<command>"
+
+# To originate an echo call from a SIP trunk on an Asterisk server, to a specified number:
+asterisk -rx "channel originate SIP/<trunk>/<number> application echo"
+
+# To print out the details of SIP accounts:
+asterisk -rx "sip show peers"
+
+# To print out the passwords of SIP accounts:
+asterisk -rx "sip show users"
+
+# To print out the current active channels:
+asterisk -rx "core show channels"

at

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+# To schedule a one time task
+at {time}
+{command 0}
+{command 1}
+Ctrl-d
+
+# {time} can be either
+now | midnight | noon | teatime (4pm)
+HH:MM
+now + N {minutes | hours | days | weeks}
+MM/DD/YY
+
+# To list pending jobs
+atq
+
+# To remove a job (use id from atq)
+atrm {id}

awk

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+# sum integers from a file or stdin, one integer per line:
+printf '1\n2\n3\n' | awk '{ sum += $1} END {print sum}'
+
+# using specific character as separator to sum integers from a file or stdin
+printf '1:2:3' | awk -F ":" '{print $1+$2+$3}'
+
+# print a multiplication table
+seq 9 | sed 'H;g' | awk -v RS='' '{for(i=1;i<=NF;i++)printf("%dx%d=%d%s", i, NR, i*NR, i==NR?"\n":"\t")}'
+
+# Specify output separator character
+printf '1 2 3' | awk 'BEGIN {OFS=":"}; {print $1,$2,$3}'

bash

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+# To implement a for loop:
+for file in *;
+do 
+    echo $file found;
+done
+
+# To implement a case command:
+case "$1"
+in
+    0) echo "zero found";;
+    1) echo "one found";;
+    2) echo "two found";;
+    3*) echo "something beginning with 3 found";;
+esac
+
+# Turn on debugging:
+set -x
+
+# Turn off debugging:
+set +x
+
+# Retrieve N-th piped command exit status
+printf 'foo' | fgrep 'foo' | sed 's/foo/bar/'
+echo ${PIPESTATUS[0]}  # replace 0 with N
+
+# Lock file:
+( set -o noclobber; echo > my.lock ) || echo 'Failed to create lock file'

bower

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+# Install a package locally
+bower install <package-name>
+
+# Install a package locally directly from github
+bower install <user>/<repo>
+
+# Install a specific package locally
+bower install <package-name>#<version>
+
+# Install a package locally and save installed package into bower.json
+bower install <package-name> --save
+
+# Retrieve info of a particular package
+bower info <package-name>
+
+# List local packages
+bower list
+
+# Search for a package by name
+bower search <package-name>
+
+# Update a package to their newest version
+bower update <package-name>
+
+# Remove a local package
+bower uninstall <package-name>