Inspiration

# Easier navigation: .., ..., ...., ....., ~ and -
alias ..="cd .."
alias ...="cd ../.."
alias ....="cd ../../.."
alias .....="cd ../../../.."
alias ~="cd ~" # `cd` is probably faster to type though
alias -- -="cd -"

# -------------------- ls aliases --------------------

# enable color support of ls and also add handy aliases
if [ -x /usr/bin/dircolors ]; then
    eval "`dircolors -b`"
    alias ls='ls --color=auto'
    #alias dir='dir --color=auto'
    #alias vdir='vdir --color=auto'

    alias grep='grep --color=auto'
    #alias fgrep='fgrep --color=auto'
    #alias egrep='egrep --color=auto'
fi

alias la='ls -la'
alias l='ls -la'
alias ls='ls -h --color --group-directories-first' 
alias lsa='ls -A'           # affiche les fichiers cachés
alias ll='ls -lh'           # affiche en mode liste détail
alias lla='ls -Al'          # affiche en mode liste détail + fichiers cachés
alias lx='ls -lXB'          # tri par extension
alias lk='ls -lSr'          # tri par taille, le plus lourd à la fin
alias lc='ls -ltcr'         # tri par date de modification, la pus récente à la fin
alias lu='ls -ltur'         # tri par date d’accès, la pus récente à la fin
alias lt='ls -ltr'          # tri par date, la pus récente à la fin
alias lm='ls -al | more'    # Pipe a travers 'more'
alias lr='ls -lR'           # ls récurssif
alias tree='tree -Csu'      # affiche sous forme d'arborescence, nécessite le paquet "tree"

# -------------------- files related aliases --------------------

alias arbre='tree -ugsapD'
alias trouver="find . -type f -print0 | xargs -0 grep " # usage : trouver 'exec(' 
alias chercher="echo \"find . -name '*' -exec grep -Hn '/MaChaine/' {} \;\""
alias lastmodified='find -type f -print0 | xargs -r0 stat -c %y\ %n | sort'
alias realtimemodifiedfiles="watch -d -n 2 'df; ls -FlAt;'"
alias du='du -kh'
alias taille='du -chs'
alias combien='ls -l | grep -v ^l | wc -l'
alias chch='sudo chmod 775 * -R && sudo chown jacques:www-data * -R'

# -------------------- archiver aliases -------------------

alias untar="tar xvf"
alias ungz="gunzip"
alias unzip2="bzip2 -d"
alias untargz="tar zxvf"
alias untarbz1="tar jxvf"

# -------------------- cleaner aliases --------------------

alias menage='find . -name "*~" -exec rm {} \;'
alias menagesvn='find . -name ".svn" -exec rm -rf {} \;'
alias menagegit='find . -name ".git" -exec rm -rf {} \;'
alias menagemac='find . -name "._*" -exec rm -rf {} \;'

# -------------------- dotfiles vim / bash fanatic aliases --------------------

alias svim="sudo vim"
alias c='clear'
alias vimvim="vim ~/.vimrc"
alias vimbashrc="vim ~/.bashrc"
alias vimalias="vim ~/.bash_aliases"
alias rebashrc=". ~/.bashrc"
alias realias=". ~/.bash_aliases"

# -------------------- apt-get related aliases --------------------

alias upup='sudo apt-get update && sudo apt-get upgrade && sudo apt-get autoremove && sudo apt-get autoclean'
alias upupg='sudo apt-get update && sudo apt-get upgrade && sudo apt-get dist-upgrade && sudo apt-get autoremove && sudo apt-get autoclean'
alias sagi='sudo apt-get install'
alias sacs='sudo apt-cache search'
alias ppa='sudo add-apt-repository'
alias autoremove='sudo apt-get autoremove && sudo apt-get autoclean'
# cf. aussi : sudo dpkg -P `dpkg -l | grep "^rc" | tr -s ' ' | cut -d ' ' -f 2`
alias purge='sudo apt-get remove --purge `deborphan`'
alias purgeall='sudo apt-get --purge remove `deborphan -n --guess-all`'
alias menageup='sudo apt-get clean && sudo apt-get autoclean && sudo apt-get autoremove'

# -------------------- GIT / SVN related aliases --------------------

alias git2cl='git log --graph --pretty=medium --color=never > CHANGELOG'
alias gitinfo='. /home/jacques/Bin/sh/gitinfo.sh'
alias gitignore='cat .gitignore'
alias gap='git add -p'
alias gpo='git push origin '
alias gpom='git push origin master'
alias svndifff="svn diff | view -"
alias svnlogg="svn log -v -r{`date '+%Y-%m-01'`}:{`date '+%Y-%m-31'`} | colordiff"

# -------------------- server related aliases --------------------

alias ssarl="sudo service apache2 reload"
alias ssars="sudo service apache2 restart"
alias ssms="sudo service mongod start"

# add alias to get latest version of mongo cheatsheet
 alias mongocheat='curl -s http://cheat.errtheblog.com/s/mongo | groovy -e "@Grab(group=/net.sourceforge.nekohtml/, module=/nekohtml/, version=/1.9.14/)import org.cyberneko.html.parsers.SAXParser;println new XmlSlurper(new SAXParser()).parseText(System.in.text).depthFirst().find{ it.@class == /sheet/}.text()"'

# -------------------- other various unclassfied aliases -------------------

alias semaine='date +%V'
alias ifif='sudo ifdown wlan0 && sudo ifup wlan0'
alias screencast='ffmpeg -f x11grab -r 25 -s wxga -i :0.0 /tmp/outputFile.mpg'
alias sshlist=". ~/localBin/sshlist.sh"
alias mybackup="cd /opt/backup/manual/ && php backup.php && cd -"
alias jsstyle="seed ~/Bin/js/jslint.js"
alias apache2routes='. ~/Bin/sh/apache2routes.sh'
alias whereisraspberrypi="sudo nmap -sV --open 192.168.0.0/25 -p22" 
alias allIps='for ip in $(seq 1 254); do ping -c 1 192.168.1.$ip>/dev/null; [ $? -eq 0 ] && echo "192.168.1.$ip UP" || : ; done'
# Add an "alert" alias for long running commands.  Use like so:
# #   sleep 10; alert
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$//'\'')"'
alias wtf='tail -f /var/log/{dmesg,messages,*{,/*}{log,err}}'

# -------------------- PHP/Sf1/Sf2/Behat related aliases --------------------

alias work='cd ~/Workspace'
alias pac='php app/console'
alias paccc='php app/console cache:clear'
alias pacad='php app/console assetic:dump --env=dev'
alias sfsetset="sudo setfacl -R -m u:www-data:rwX -m u:`whoami`:rwX app/cache app/logs && sudo setfacl -dR -m u:www-data:rwx -m u:`whoami`:rwx app/cache app/logs"
alias phpstats=". ~/Bin/sh/phpstats.sh"
alias getcomposer='curl -s http://getcomposer.org/installer | php'
alias getbehat='wget https://github.com/downloads/Behat/Behat/behat.phar'

# -------------------- network-related aliases -------------------

# IP addresses
alias ip="dig +short myip.opendns.com @resolver1.opendns.com"

# Enhanced WHOIS lookups
# alias whois="whois -h whois-servers.net"
# View HTTP traffic
alias sniff="sudo ngrep -d 'eth1' -t '^(GET|POST) ' 'tcp and port 80'"
alias httpdump="sudo tcpdump -i eth1 -n -s 0 -w - | grep -a -o -E \"Host\: .*|GET \/.*\""

Reload it

source ~/.bash_aliases