Linux console prompt with git branch

.bash_profile

# ...

source ~/.bashrc

.bashrc

# ...

# Append current git branch in prompt
 
parse_git_branch() {
  if ! git rev-parse --git-dir > /dev/null 2>&1; then
    return 0
  fi
 
  git_branch=$(git branch 2>/dev/null| sed -n '/^\*/s/^\* //p')
 
  echo " ($git_branch)"
}
 
PS1="${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]\[\033[01;34m\] \w\[\033[00m\]\[\033[01;33m\]\$(parse_git_branch)\[\033[00m\] \n\[\033[01;37m\]$ \[\033[00m\]"