My bash profile

.bash_profile

# Avoid duplicate commands in the history
export HISTCONTROL=ignoredups;

# Make it less case sensitive
shopt -s nocaseglob

# Make the PS1 better
source ~/.git-completion.sh
PS1='\e[0;34m\][\t] \e[0;32m\]\w`__git_ps1`:\e[0m\] '

# Make ls behave like ls -ahl
alias ls='ls -ahl'

# Show some colors
export CLICOLOR=1

# Better unicode support
export LC_CTYPE=en_US.UTF-8

# Prettier git log
alias gs='git status -sb'
alias gc='git commit -a'
alias gl='git log -20 --oneline --graph --decorate --pretty=format:"%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%cr) %C(bold blue)<%an>%Creset"'

PS1 is de shell variable die het stukje voor hetgeen je typt in Terminal. Moeilijk uit te leggen :) Lees dit maar eens: http://www.thegeekstuff.com/2008/09/bash-shell-ps1-10-examples-to-make-your-linux-prompt-like-angelina-jolie/