The one that I always make sure to include is:

alias sudo='sudo '

This looks a bit confusing, but essentially, it makes all of the other aliases you define function correctly when used with sudo. The ALIASES section of the bash manual says:

If the last character of the alias value is a blank, then the next command word following the alias is also checked for alias expansion.

So this is just a nice way of making sure your commands are evaluated for aliases before being passed over to sudo, which ends up being pretty useful.

alias ls='ls -AlhF --color=auto'

NEVER terminal without it ;-)

I use fish, and with its command history and navigation, I've been able to skip a whole bunch of aliases.

trim off that pesky carriage return at the end of pbcopy on a mac.

alias copy="tr -d '\n' | pbcopy"

One I use all the time (but doesn't work with hashed values in .known_hosts):

# SSH auto-completion based on entries in known_hosts.
if [[ -e ~/.ssh/known_hosts ]]; then
  complete -W "$(echo `cat ~/.ssh/known_hosts | cut -f 1 -d ' ' | sed -e s/,.*//g | uniq | grep -v "\["`;)" ssh
fi

This returns one random line from the file specified as first parameter:

function raffle() {
  head -$((${RANDOM} % `wc -l < $1` + 1)) $1 | tail -1
}

For OSX this one can be quite fun:

alias talk='cat - | while read cat; do say $cat; done'

And the most important one:

# get random BOFH excuse
function bofh() {
    telnet towel.blinkenlights.nl 666
}

Here are a few more of my favorite aliases.

Show/hide hidden files in the macOS Finder:

alias show="defaults write com.apple.finder AppleShowAllFiles -bool true && killall Finder"
alias hide="defaults write com.apple.finder AppleShowAllFiles -bool false && killall Finder"

Limit ping to five ECHO_REQUEST packets:

alias ping='ping -c 5'

Display drives and space in human readable format:

alias drives='df -h'

Run this one in ~/ to discover what folders are using the most space:

alias usage='du -h -d1'

Colorize grep output

alias grep='grep --color=auto -n'

Clear the screen (can't live without this one!)

alias c='clear'

That's all, folks!

For starters, I've got some aliases set up for common typos, e.g:

alias cd..='cd ..'
alias cd~='cd ..'

This Ubuntu default is great for sending notifications when a long running command exits:

alias alert='notify-send --urgency=low -i "$([ $? = 0 ] && echo terminal || echo error)" "$(history|tail -n1|sed -e '\''s/^\s*[0-9]\+\s*//;s/[;&|]\s*alert$//'\'')"'

I spend a lot of time building Debin packages with pbuilder. So these come in handy:

alias sid-update="pbuilder-dist sid update; if [ -f /usr/bin/notify-send ]; then alert; fi"
alias experimental-update="pbuilder-dist experimental update; if [ -f /usr/bin/notify-send ]; then alert; fi"
alias trusty-update="pbuilder-dist trusty update; if [ -f /usr/bin/notify-send ]; then alert; fi"
alias x-update="pbuilder-dist xenial update; if [ -f /usr/bin/notify-send ]; then alert; fi"
alias y-update="pbuilder-dist xenial update; if [ -f /usr/bin/notify-send ]; then alert; fi"

function sid-build () { pbuilder-dist sid build "$@"; \ 
    if [ -f /usr/bin/notify-send ]; then alert; fi }
function experimental-build () { pbuilder-dist experimental build "$@"; \ 
    if [ -f /usr/bin/notify-send ]; then alert; fi }
function trusty-build () { pbuilder-dist trusty build "$@"; \ 
    if [ -f /usr/bin/notify-send ]; then alert; fi }
function x-build () { pbuilder-dist xenial build "$@"; \ 
    if [ -f /usr/bin/notify-send ]; then alert; fi }
function y-build () { pbuilder-dist yakkety build "$@"; \ 
    if [ -f /usr/bin/notify-send ]; then alert; fi }

There's a could things going on there:

• I test for the notify-send binary so I can use the same .bashrc file on my desktop or on a Droplet.
• Bash aliases can not take arguments, so I'm also using a few functions.

Excited to see what others are using!

I am a MySQL DBA. Here are some of my most used:

alias ..="cd .."
alias ...="cd ..; cd .."
alias ll="ls -l"
alias g="grep -i"
alias csv="paste -d, -s"
alias mycon="mysql -A -h"

• The 'csv' alias is used when I have a list of items that I want to change to a CSV. My most used case is a situation when I have a file that contains id's, one per line, and I want to convert it to a MySQL IN list.

I use them for easy switching between projects, e.g.:

alias cx="cd ~/work/src/github.com/xmudrii/"
alias .x="cd ~/work/src/github.com/xmudrii/project && go install"

And starting servers:

alias api="nodemon ~/someproject-api"

Also easy ssh and vim

alias .ans="~/test/mng/ansible/"
alias ish="ssh ip"
alias dsh=dssh
alias v="vim"
alias .v=vimproject

dssh() {
    doctl compute ssh $1
}

vimproject() {
    vim ~/work/src/github.com/xmudrii/caffebar-comm/$1
}

Also this thread give me some very nice ideas, thanks for sharing! :)

I use tmux a ton. So I have these:

alias tn='tmux new-session -s'                                # tmux new session
alias ta='tmux attach -t'                                     # tmux attach
alias tl='tmux ls'                                            # list
alias tk='tmux kill-session -s'                               # kill session name

And this for interactive terminals:

# ask for tmux but only if we're not in tmux
if [[ ! $TERM =~ screen ]]; then
  # list tmux sessions
  tmux list-sessions 2> /dev/null
  echo "want tmux?"
  read answer
  if [[ $answer == "y" ]]; then
    tmux && exit 0
  fi
fi

And since I tweak my configuration a lot, I have aliases for those:

alias ep='vim ~/.bash_profile'                                # edit bash_profile
alias ev='vim ~/.vim/vimrc_main'                              # edit shared vim conf
alias evv='vim ~/.vim/vundle'                                 # edit vim plugins
alias evp='vim ~/.vim/vimrc_private'                          # edit private vim settings
alias et='vim ~/.tmux.conf'                                   # edit tmux conf

Not my favorite, but definitely what I use more:

alias :q='exit'

Vim++

Quickly reload .bash_profile to enable changes.

alias reload='source .bash_profile'

Search for running processes.

alias psg='ps -ef | grep '

Example: psg BBEdit

Check for Homebrew updates, brew upgrades, and then cleanup.

alias update='brew update && brew upgrade --all && brew cask update && brew cleanup && brew cask cleanup'

Recursively delete those annoying .DS_Store files.

alias cleanup="find . -type f -name '*.DS_Store' -ls -delete"

Extract the contents of a .tar file.

alias untar='tar -xvf'

Print out the local IP on en0.

alias iplocal='ifconfig en0 | grep --word-regexp inet | awk "{print $2}"'

Print out the public ip address.

alias ippub="dig +short myip.opendns.com @resolver1.opendns.com"

Generate a random 20 character password using OpenSSL.

alias randpass="openssl rand -base64 20"

Ha ha I have this one:

alias PANIC="espeak 'OH NO, the sky is falling'"

Everyone in the office just rolls their eyes

A few docker shortcuts.

# Docker stuff
# Clean stopped containers
alias cco="docker ps -a | grep "Exited" | awk '{print $1}' | xargs docker rm"
# After that, clean unused images to reclaim disk space
alias cimg="docker images | grep none | awk '{print \$3}' | xargs docker rmi"
# Finally the regular stuff just to save typing.
alias dps="docker ps -a"
alias di="docker images"
alias drmi="docker rmi"
alias drm="docker rm"

A system notification to popup when a long shell task finishes:

# Display an "alert" after running commands.  Use like so:
#   sleep 10; alert "Done sleeping"
alias alert='notify-send --urgency=low -i "$([ $? = 0 ] && echo terminal || echo error)" "$(history|tail -n1|sed -e '\''s/^\s*[0-9]\+\s*//;s/[;&|]\s*alert$//'\'')"'

A docker and git alias, mainly because I can't type and my typos are actually quite comical in terms of their use/misuse.

alias dicker='docker'
alias goit='git'

Keep all your bash history:

export HISTTIMEFORMAT="%s "
PROMPT_COMMAND="${PROMPT_COMMAND:+$PROMPT_COMMAND ; }"'echo $$ $USER \
               "$(history 1)" >> ~/.bash_eternal_history'

extract files:

extract () {
  if [ -f $1 ] ; then
    case $1 in
      *.tar.bz2)  tar xjf $1    ;;
      *.tar.gz) tar xzf $1    ;;
      *.bz2)    bunzip2 $1    ;;
      *.rar)    rar x $1    ;;
      *.gz)   gunzip $1   ;;
      *.tar)    tar xf $1   ;;
      *.tbz2)   tar xjf $1    ;;
      *.tgz)    tar xzf $1    ;;
      *.zip)    unzip $1    ;;
      *.Z)    uncompress $1 ;;
      *)      echo "'$1' cannot be extracted via extract()" ;;
    esac
  else
    echo "'$1' is not a valid file"
  fi
}

Complete hosts:

_complete_hosts () {
    COMPREPLY=()
    cur="${COMP_WORDS[COMP_CWORD]}"
    host_list=`{
        for c in /etc/ssh_config /etc/ssh/ssh_config ~/.ssh/config
        do [ -r $c ] && sed -n -e 's/^Host[[:space:]]//p' -e 's/^[[:space:]]*HostName[[:space:]]//p' $c
        done
        for k in /etc/ssh_known_hosts /etc/ssh/ssh_known_hosts ~/.ssh/known_hosts
        do [ -r $k ] && egrep -v '^[#\[]' $k|cut -f 1 -d ' '|sed -e 's/[,:].*//g'
        done
        sed -n -e 's/^[0-9][0-9\.]*//p' /etc/hosts; }|tr ' ' '\n'|grep -v '*'`
    COMPREPLY=( $(compgen -W "${host_list}" -- $cur))
    return 0
}
complete -F _complete_hosts ssh
complete -F _complete_hosts sshs
complete -F _complete_hosts host
complete -F _complete_hosts telnet
complete -F _complete_hosts ping

Complete lxc/lxd containers: (~/etc/containers must be created first)

_complete_container () {
    lxc list|grep PERSIS | awk '{print $2}'|sort|uniq >| /home/$USER/etc/containers
    COMPREPLY=()
    cur="${COMP_WORDS[COMP_CWORD]}"
    host_list=`{
        for k in /home/jonathan/etc/containers
        do [ -r $k ] && egrep -v '^[#\[]' $k|cut -f 1 -d ' '|sed -e 's/[,:].*//g'
        done
        sed -n -e 's/^[0-9][0-9\.]*//p' /home/jonathan/etc/containers; }|tr ' ' '\n'|grep -v '*'`
    COMPREPLY=( $(compgen -W "${host_list}" -- $cur))
    return 0
}
complete -F _complete_container c

c() {
        lxc exec $1 -- /bin/bash
}

proxy remote:

proxy_src_remote () {
 ssh $1@$2 -R 3128:localhost:3128
}

In last few months I started using ZSH + http://ohmyz.sh/ as my default shell and it's AWESOME!

My favorite alias/function:

randompw()
{
    cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w ${1:-32} | head -n 1
}

Some of my favorites:

Merges current branch into master then git checkout back to develop

alias mergemaster='git checkout master; git pull; git merge develop; git push; git checkout develop'

Adds everything from current folder to git

alias add='git add .'

For Node developers:

alias s='npm start'

alias lint='npm run lint'

Docker:

alias dockerstop='docker-compose stop'
alias dockerup='docker-compose up -d'
alias dockerrm='docker-compose rm --all'

One I must have when I use Sublime Text

alias slt='subl'

When I do presentations on my Mac I like to hide the mess on my desktop.

alias hideDesktop='defaults write com.apple.finder CreateDesktop -bool false; killall Finder;'
alias showDesktop='defaults write com.apple.finder CreateDesktop -bool true; killall Finder;'

Start my screensaver

alias afk="open /System/Library/Frameworks/ScreenSaver.framework/Versions/A/Resources/ScreenSaverEngine.app"

Send my Mac to sleep:

alias sleep="pmset sleep now"

List global installed packages and bottles.

alias npml='npm list -g --depth=0'
alias brewl='brew leaves'

My favorite

alias fuck='sudo !!'

Some functions inside my .zshrc

function clock() {
    watch -t -n1 "echo "" && date +""$'  '"%T""
}

function c() {
    clear; cd $1; l;
}

(for mac users)

# Change directory to the current Finder directory
function cdf() {
    target=`osascript -e 'tell application "Finder" to if (count of Finder windows) > 0 then get POSIX path of (target of front Finder window as text)'`
    if [ "$target" != "" ]; then
        cd "$target"; pwd
    else
        echo 'No Finder window found' >&2
    fi
}

alias myips="ifconfig | sed -En 's/127.0.0.1//;s/.*inet (addr:)?(([0-9]*\.){3}[0-9]*).*/\2/p'"
shows a listing of your IP addresses, works great if you have multiple /dev/eth* (OSX/nix)

Technically not an alias, but you could probably make it work as one,

Get the price of Monero (XMR) !

function mon () {
  curl -s --url "https://www.coingecko.com/en/price_charts/monero/usd" | grep "value of Monero for today is" | cut -d '>' -f 2 | cut -d '<' -f 1
}

I get a bit desperate when trying to parse logs without my rank alias. It answers the question "what is the most common line in this stream"

alias rank="sort| uniq -c|sort -n"

Tired of mkdir bla; cd bla

mkcd() { mkdir $1;cd $1; }

Clean up exploded tarballs:

mkmvcd() { mkdir ${*: -1:1}; mv $*; cd ${*: -1:1}; }

tar -vxzf bad.tgz
oh curses..
mkmvcd readme.md badsubfolder bad* baddir

Because i write way to many shell scripts:

alias cx="chmod +x"

Run make from a sub-directory of a project.

mk (){
        if [ $PWD == "/" ]; then
                echo "FAILED :("
        elif [ ! -f Makefile ]; then
                pushd .. > /dev/null
                mk $*
                popd > /dev/null
        else 
                pwd
                echo make $*
                make $*
        fi
}

Try to do something and give it 3 attempts for it to work (ideal for backup scripts etc when you don't want to be woken up or turn up to work the following morning to a failed job)

try_thrice() { $@ || $@ || $@ }

add datestamp to the beginning of each line of a log

log() {
case $# in
0) CMD="cat -";;
*) CMD="echo $@";;
esac
$CMD | while read line ; do
echo `date '+%Y-%m-%d %H:%M:%S'` $line
done | tee -a $LOGFILE
}

ala:-

$ do_something | log

or

$ log "something happened"

Hi Melissa,

I am unable to run the MapReduce hadoop-mapreduce-examples with different name instead of 'Principal [.]*'

alias fucking='sudo'

You see when I get mad after being told I need to run as root I just type fucking 'commandnamehere'

autojump has been my most productive alias
alias z=autojump