Display the current git branch in your command prompt. Add an asterisk if there are unstaged updates.

.bashrc

# Will produce command line prompts like
#         directory(branch) $
# in git repositories and like
#         directory $
# elsewhere.
# If there are unstaged changes in the repository, there will be an asterisk next to the branch name:
#         directory(branch*) $

parse_git_branch() {
	hasmod=""
	if [[ `git ls-files -dmo --exclude-standard 2> /dev/null` ]]; then
		hasmod="*"
	fi
	git branch 2> /dev/null | sed -e '/^[^*]/d' -e "s/* \(.*\)/(\1$hasmod)/"
}
export PS1="\W\$(parse_git_branch) $ "