BASH prompt

.bashrc

PS1=$'\[\033[01;36;44m\]# $( EC=$?; [ $EC -eq 0 ] && echo -n "\[\033[01;32;44m\]Exit:$EC" || echo -n "\[\033[00;31;44m\]Exit:$EC" ) \
\[\033[00;37;44m\]$(date +%Y-%m-%d\ %H:%M:%S) \[\033[01;34;49m\] \
\[\033[01;30;49m\][\[\033[00;35;49m\]\u\[\033[01;30;49m\]@\[\033[01;34;49m\]\h\[\033[01;30;49m\]:\
\[\033[00;33;49m\]\w\[\033[00;36;49m\]\[\033[01;30;49m\]]\[\033[01;34;49m\]\n\
\[\033[01;36;49m\]\$\[\033[01;30;49m\](: !\! )\[\033[00;00;00m\] '

# If this is an xterm set the title to user@host:dir
case "$TERM" in
xterm*|rxvt*)
    PS1="\[\e]0;\W\a\]$PS1"
    ;;
*)
    ;;
esac

## bash history tweaks from http://blog.sanctum.geek.nz/better-bash-history/
HISTFILESIZE=1000000
HISTSIZE=1000000
HISTCONTROL=ignoreboth
HISTIGNORE='ls:bg:fg:history'
HISTTIMEFORMAT=$'\033[01;30;49m%F %T\033[00;00;00m '
shopt -s histappend

Sample: http://imgur.com/zgWA4BG

Nothing fancy, just addresses a few things that annoy me about standard prompts:

• Displays exit code of last command in green or red
• timestamp of when last command completed
• shows user@host:path for easy copy / paste into rsync / scp commands
• shows command number for !501 completion
• comment formatting # and $(: ... ) allow for easy copy-n-paste of shell sessions into documentation, so others can copy and paste to repeat your commands