Add git branch name and status to your shell prompt

gistfile1.sh

# If the current directory is a git repository, this displays [branch_name] and,
# if there are uncommitted changes, an asterisk.

# Example:
#   ~/projects/my_project[master*]:

# I should also point out this uses my own hot pink & teal shell colour scheme (best viewed on white background).
# Change the colours if you don't like pretty things.

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)]/"
}

export PS1='\[\033[0;35m\]\w\[\033[0;36m\]$(parse_git_branch)\[\e[0m\]: '