OS X terminal Create a text file named .bash_profile in your $HOME path with the following content:

export PATH=$PATH:$HOME/bin   
export CLICOLOR=1   
export LSCOLORS=ExFxCxDxBxegedabagacad   
export PS1='${debian_chroot:+($debian_chroot)}\[\033[1;32m\]\u@\h\[\033[1;31m\]:\[\033[0;36m\]\w$\[\033[0m\] '  
#export PS1='${debian_chroot:+($debian_chroot)}\[\033[01;00m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '   
export PS2='>'  
# ~/.bashrc: executed by bash(1) for non-login shells.   
# see /usr/share/doc/bash/examples/startup-files (in the package bash-doc)   
# for examples   
# If not running interactively, don't do anything   
[ -z "$PS1" ] && return   
# don't put duplicate lines in the history. See bash(1) for more options   
# don't overwrite GNU Midnight Commander's setting of `ignorespace'.   
HISTCONTROL=$HISTCONTROL${HISTCONTROL+,}ignoredups   
# ... or force ignoredups and ignorespace   
HISTCONTROL=ignoreboth   
# append to the history file, don't overwrite it   
shopt -s histappend   
# for setting history length see HISTSIZE and HISTFILESIZE in bash(1)   
# check the window size after each command and, if necessary,   
# update the values of LINES and COLUMNS.   
shopt -s checkwinsize   
# make less more friendly for non-text input files, see lesspipe(1)   
[ -x /usr/bin/lesspipe ] && eval "$(SHELL=/bin/sh lesspipe)"   
# set variable identifying the chroot you work in (used in the prompt below)   
if [ -z "$debian_chroot" ] && [ -r /etc/debian_chroot ]; then   
debian_chroot=$(cat /etc/debian_chroot)   
fi   
# set a fancy prompt (non-color, unless we know we "want" color)   
case "$TERM" in   
xterm-color) color_prompt=yes;;   
esac   
# uncomment for a colored prompt, if the terminal has the capability; turned   
# off by default to not distract the user: the focus in a terminal window   
# should be on the output of commands, not on the prompt   
#force_color_prompt=yes   
if [ -n "$force_color_prompt" ]; then   
if [ -x /usr/bin/tput ] && tput setaf 1 >&/dev/null; then   
# We have color support; assume it's compliant with Ecma-48   
# (ISO/IEC-6429). (Lack of such support is extremely rare, and such   
# a case would tend to support setf rather than setaf.)   
color_prompt=yes   
else   
color_prompt=   
fi   
fi   
unset color_prompt force_color_prompt   
# If this is an xterm set the title to user@host:dir   
case "$TERM" in   
xterm*|rxvt*)   
;;   
*)   
;;   
esac   
# enable color support of ls and also add handy aliases   
if [ -x /usr/bin/dircolors ]; then   
test -r ~/.dircolors && eval "$(dircolors -b ~/.dircolors)" || 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   
# some more ls aliases   
#alias ll='ls -l'   
#alias la='ls -A'   
#alias l='ls -CF'   
# Alias definitions.   
# You may want to put all your additions into a separate file like   
# ~/.bash_aliases, instead of adding them here directly.   
# See /usr/share/doc/bash-doc/examples in the bash-doc package.   
if [ -f ~/.bash_aliases ]; then   
. ~/.bash_aliases   
fi   
# enable programmable completion features (you don't need to enable   
# this, if it's already enabled in /etc/bash.bashrc and /etc/profile   
# sources /etc/bash.bashrc).   
if [ -f /etc/bash_completion ] && ! shopt -oq posix; then   
. /etc/bash_completion   
fi