2 ways to show git branch in PS1 bash prompt

dot-bashrc

# show git branch in shell prompt
# ref: https://home.regit.org/technical-articles/git-for-the-newbie/
export PS1='[\u@\h:\W$(__git_ps1 " (%s)")]\$ '

# ref: https://fedorahosted.org/pulp/wiki/GitGuide
export PS1="[\u@\h \W\$(git branch 2> /dev/null | grep -e '\* ' | sed 's/^..\(.*\)/{\1}/')]\$ "

posh-git rocks...you don't have something like that for bash?