branch on bashrc

branch on bashrc

# git branchs
function find_git_branch {
  local dir=. head
  until [ "$dir" -ef / ]; do
    if [ -f "$dir/.git/HEAD" ]; then
      head=$(< "$dir/.git/HEAD")
      if [[ $head == ref:\ refs/heads/* ]]; then
        git_branch=" (${head#*/*/})"
      elif [[ $head != '' ]]; then
        git_branch=' (detached)'
      else
        git_branch=' (unknown)'
      fi
      return
    fi
    dir="../$dir"
  done
  git_branch=''
}

PROMPT_COMMAND="find_git_branch; $PROMPT_COMMAND"

green=$'\e[1;32m'
normal_colours=$'\e[m'

PS1="\[$normal_colours\]\u@\h:\w\[$green\]\$git_branch\[$normal_colours\]\\$\[$normal_colours\] "