Git prompt

.bashrc

# If we're in a git repo, print the first 9 characters of the current committish.
function parse_git_commit() {
    git rev-parse HEAD 2>/dev/null | cut -c1-10
}

# If we're in a git repo, print the current branch name.  The sed call deletes
# any line not starting with '* ', then removes the '* '
function parse_git_branch () {
    git rev-parse --abbrev-ref HEAD 2>/dev/null
}

# If we're in a git repo, print "@(<branchname>:<committish>)"
function current_git_info (){
    branch=`parse_git_branch`
    commit=`parse_git_commit`

    # If branch is not empty
    if [ ! -z "$branch" ]
    then
        echo "@($branch:$commit)";
    fi
}

PS1='$(current_git_info) \[\e[0;32m\][\u@\h]\[\e[m\] \[\e[1m\][\t] \[\e[1;34m\][\w]\[\e[m\]\n  \$ \[\e[m\]'