Colorful Bash Prompt

Edit /etc/profile and change: <source lang="bash"> if [ "$PS1" ]; then

1. works for bash and ash (no other shells known to be in use here)

  PS1='\u@\h:\w\$ '

fi </source> to this: <source lang="bash"> if [ -n "${BASH_VERSION}" ] ; then

       if [ -f /etc/bash/bashrc ] ; then
               . /etc/bash/bashrc
       else
               PS1='\u@\h \w \$ '
       fi

else

       PS1="${USER:-$(type whoami >/dev/null && whoami)}@$(type uname >/dev/null && uname -n) \$ "

fi </source>

Create this directory: <source lang="bash"> mkdir /etc/bash </source>

Save the file below in /etc/bash/bashrc <source lang="bash">

1. /etc/bash/bashrc

if $- != *i*  ; then

       # Shell is non-interactive.  Be done now!                    
       return                                                       

fi

shopt -s checkwinsize

shopt -s histappend

case ${TERM} in

       xterm*|rxvt*|Eterm|aterm|kterm|gnome*|interix)
               PROMPT_COMMAND='echo -ne "\033]0;${USER}@${HOSTNAME%%.*}:${PWD/$HOME/~}\007"'
               ;;                                                                           
       screen)                                                                              
               PROMPT_COMMAND='echo -ne "\033_${USER}@${HOSTNAME%%.*}:${PWD/$HOME/~}\033\\"'
               ;;                                                                           

esac

use_color=true

safe_term=${TERM//[^[:alnum:]]/?} # sanitize TERM match_lhs="" -f ~/.dir_colors && match_lhs="${match_lhs}$(<~/.dir_colors)" -f /etc/DIR_COLORS && match_lhs="${match_lhs}$(</etc/DIR_COLORS)" [[ -z ${match_lhs} ]] \

       && type -P dircolors >/dev/null \
       && match_lhs=$(dircolors --print-database)

[[ $'\n'${match_lhs} == *$'\n'"TERM "${safe_term}* ]] && use_color=true

if ${use_color} ; then

       # Enable colors for ls, etc.  Prefer ~/.dir_colors #64489
       if type -P dircolors >/dev/null ; then
               if -f ~/.dir_colors  ; then
                       eval $(dircolors -b ~/.dir_colors)
               elif -f /etc/DIR_COLORS  ; then
                       eval $(dircolors -b /etc/DIR_COLORS)
               fi
       fi

       if [[ ${EUID} == 0 ]] ; then
               PS1='\[\033[01;31m\]\h\[\033[01;34m\] \W \$\[\033[00m\] '
       else
               PS1='\[\033[01;32m\]\u@\h\[\033[01;34m\] \w \$\[\033[00m\] '
       fi

else

       if [[ ${EUID} == 0 ]] ; then
               # show root@ when we don't have colors
               PS1='\u@\h \W \$ '
       else
               PS1='\u@\h \w \$ '
       fi

fi

unset use_color safe_term match_lhs </source>

Please note that when running as root, ls --color will segfault. See How To Use "ls" In Color for more information.