Nice to have .bashrc

.bashrc

#------------------------------------------------------------------------------
# Returncode.
#------------------------------------------------------------------------------
function returncode
{
  returncode=$?
  if [ $returncode != 0 ]; then
    echo "[$returncode]"
  else
    echo ""
  fi
}


#------------------------------------------------------------------------------
# Path.
#------------------------------------------------------------------------------
PATH="/opt/local/bin:/opt/local/sbin:/usr/local/bin:/usr/local/sbin:$PATH"
export PATH

#------------------------------------------------------------------------------
# Prompt.
#------------------------------------------------------------------------------
if [ "$BASH" ]; then
  if [ "`id -u`" -eq 0 ]; then
    # The root prompt is red.
    PS1='\[\033[0;31m\]\u@\h:\w >\[\033[0;37m\] '
  else
    # PS1='\u@\h:\w > '
    PS1='\[\033[0;31m\]$(returncode)\[\033[0;37m\]\[\033[0;35m\]\u@\h\[\033[0;37m\]:\[\033[0;36m\]\w\[\033[0;37m\]$(parse_git_branch) > '
  fi
else
  if [ "`id -u`" -eq 0 ]; then
    PS1='# '
  else
    PS1='$ '
  fi
fi

export PS1

# Whenever displaying the prompt, write the previous line to .bash_history.
PROMPT_COMMAND='history -a'


#------------------------------------------------------------------------------
# Bash options.
#------------------------------------------------------------------------------
set -o notify


#------------------------------------------------------------------------------
# Bash shopts.
#------------------------------------------------------------------------------
shopt -s extglob
shopt -s progcomp
shopt -s histappend
shopt -s histreedit
shopt -s histverify
shopt -s cmdhist
shopt -s lithist
shopt -s no_empty_cmd_completion
shopt -s checkhash
shopt -s hostcomplete


#------------------------------------------------------------------------------
# Completion.
#------------------------------------------------------------------------------
complete -A alias         alias unalias
complete -A command       which
complete -A export        export printenv
complete -A hostname      ssh telnet ftp ncftp ping dig nmap
complete -A helptopic     help
complete -A job -P '%'    fg jobs
complete -A setopt        set
complete -A shopt         shopt
complete -A signal        kill killall
complete -A user          su userdel passwd
complete -A group         groupdel groupmod newgrp
complete -A directory     cd rmdir


#------------------------------------------------------------------------------
# Git options.
#------------------------------------------------------------------------------
function parse_git_dirty {
  [[ $(git status 2> /dev/null | tail -n1) != "nothing to commit (working directory clean)" ]] && echo "*"
}
function parse_git_branch {
  git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e "s/* \(.*\)/[\1$(parse_git_dirty)]/"
}

#------------------------------------------------------------------------------
# Colorized ls.
#------------------------------------------------------------------------------
export LS_OPTIONS='--color=auto'
alias ls='ls $LS_OPTIONS'


#------------------------------------------------------------------------------
# Security.
#------------------------------------------------------------------------------
alias rm='rm -i'
alias cp='cp -i'
alias mv='mv -i'
alias ln='ln -i'


#------------------------------------------------------------------------------
# Typos.
#------------------------------------------------------------------------------
alias scsl=clear
alias qcls=clear
alias clls=clear
alias csl=clear
alias cll=clear
alias slc=clear
alias lcs=clear
alias lsc=clear
alias sls=clear
alias scl=clear
alias cs=clear
alias c=clear
alias cl=clear
alias ssl=clear
alias csll=clear
alias clsl=clear
alias chmdo=chmod
alias sl=ls
alias sll=ls
alias lsl=ls
alias s=ls
alias psa='ps a'
alias tarx='tar x'
alias maek=make
alias act=cat
alias cart=cat
alias grpe=grep
alias gpre=grep
alias whcih=which
alias icfonfig=ifconfig
alias ifocnfig=ifconfig
alias iv=vi
alias lvi=vi
alias vf=cd
alias vp=cp
alias nmv=mv
alias mann=man
alias nman=man
alias nmann=man
alias mb=mv

#------------------------------------------------------------------------------
# Miscellaneous.
#------------------------------------------------------------------------------
# mesg n                     # Disable messages.
# setterm -blength 0         # Disable annoying beep.
ulimit -c unlimited        # No limits.


#------------------------------------------------------------------------------
# Environment Variables.
#------------------------------------------------------------------------------
export EDITOR=vim
export NNTPSERVER=localhost
export HISTSIZE=2000
export HISTFILESIZE=100000
export HISTIGNORE=
export MESA_GLX_FX=fullscreen
export CVS_RSH=ssh
export PAGER=less
export LESS=i


#------------------------------------------------------------------------------
# Terminal settings.
#------------------------------------------------------------------------------
if ! [ $TERM ] ; then
  eval `tset -s -Q`
  case $TERM in
    con*|vt100|linux|xterm)
      tset -Q -e ^?
    ;;
  esac
fi


#------------------------------------------------------------------------------
# Useful aliases to save some typing.
#------------------------------------------------------------------------------
alias cls='clear'
alias l='ls -lA'
alias lsr='ls -lSr'
alias md='mkdir'
alias rd='rmdir'
alias cd..='cd ..'
alias ..='cd ..'
alias ...='cd ../..'
alias ddu='find . -maxdepth 1 -type d -exec du -s {} \;'
alias mc='LANG=en_US mc -c'
alias unix2dos='recode lat1..ibmpc'
alias dos2unix='recode ibmpc..lat1'
alias v='clear; vlock -a -q'
alias vv='clear; lockvc stars'
alias ma='make 1>/dev/null'
alias more='less'
alias p='ping www.google.com'
alias n='netstat -a -e -e -p -A inet'

alias my='mysql5 -u root -p'
alias ru='ruby setup.rb all'
alias HEX="ruby -e 'printf(\"0x%X\n\", ARGV[0])'"
alias DEC="ruby -e 'printf(\"%d\n\", ARGV[0])'"
alias BIN="ruby -e 'printf(\"%bb\n\", ARGV[0])'"
alias WORD="ruby -e 'printf(\"0x%04X\n\", ARGV[0])'"

alias gin='git'
alias vodka='git'
alias whisky='git'
alias pisco='git'
alias commit='git add . && git commit -a -m '
alias stash='git stash'
alias destash='git stash pop'
alias lsorig='find . | grep "\.orig"'
alias rmorig='find . | grep "\.orig" | xargs rm -f'

alias backup='heroku pgbackups:capture --expire'
alias irb='irb --simple-prompt'
alias gemset='rvm gemset'


#------------------------------------------------------------------------------
# Import local/private settings.
#------------------------------------------------------------------------------
if [ -f ~/.bashrc.local ]; then
  . ~/.bashrc.local
fi


#------------------------------------------------------------------------------
# User-dependent Settings.
#------------------------------------------------------------------------------
umask 022


#------------------------------------------------------------------------------
# RVM.
#------------------------------------------------------------------------------

[[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm" # Load RVM function