displaying repository information in your terminal prompt

[Thomas G. Willis]

For those on *NIX you can drop this in your ~/.bashrc and source it, then anytime you are working in a directory that is either a git or mercurial or svn repository, the branch name and whether you have pending changes is shown in your bash prompt.

## Print nickname for git/hg/bzr/svn version control in CWD

## Optional $1 of format string for printf, default "(%s) "

function be_get_branch {

  local dir="$PWD"

  local vcs

  local nick

  while [[ "$dir" != "/" ]]; do

    for vcs in git hg svn bzr; do

      if [[ -d "$dir/.$vcs" ]] && hash "$vcs" &>/dev/null; then

        case "$vcs" in

          git) __git_ps1 "${1:-(%s) }"; return;;

          hg) nick=$(hg branch 2>/dev/null);;

          svn) nick=$(svn info 2>/dev/null\

                | grep -e '^Repository Root:'\

                | sed -e 's#.*/##');;

          bzr)

            local conf="${dir}/.bzr/branch/branch.conf" # normal branch

            [[ -f "$conf" ]] && nick=$(grep -E '^nickname =' "$conf" | cut -d' ' -f 3)

            conf="${dir}/.bzr/branch/location" # colo/lightweight branch

            [[ -z "$nick" ]] && [[ -f "$conf" ]] && nick="$(basename "$(< $conf)")"

            [[ -z "$nick" ]] && nick="$(basename "$(readlink -f "$dir")")";;

        esac

        [[ -n "$nick" ]] && printf "${1:-(%s) }" "$nick"

        return 0

      fi

    done

    dir="$(dirname "$dir")"

  done

}

## Add branch to PS1 (based on $PS1 or $1), formatted as $2

export GIT_PS1_SHOWDIRTYSTATE=yes

export PS1="\$(be_get_branch "$2")${PS1}";

then you will get something like the following.....

twillis@twillis-MacBookPro:~$ cd projects/pycon_sprint/pyramid_appengine.env/src/pyramid_appengine/

(master) twillis@twillis-MacBookPro:~/projects/pycon_sprint/pyramid_appengine.env/src/pyramid_appengine$ echo "in the master branch"

in the master branch

(master) twillis@twillis-MacBookPro:~/projects/pycon_sprint/pyramid_appengine.env/src/pyramid_appengine$ cd ~/projects/buttercup_dev

(development) twillis@twillis-MacBookPro:~/projects/buttercup_dev$ echo "now in the development branch"

now in the development branch

(development) twillis@twillis-MacBookPro:~/projects/buttercup_dev$ cd ~/projects/buttercup_ndb/

(ndb) twillis@twillis-MacBookPro:~/projects/buttercup_ndb$ echo "now in the ndb branch"

now in the ndb branch

(ndb) twillis@twillis-MacBookPro:~/projects/buttercup_ndb$ 

You can set it up on windows too.

http://josefbetancourt.wordpress.com/2011/08/25/git-branch-shell-prompt/