A helper script for working with GitHub Git repositories.

github.sh

#!/bin/bash

# A helper script for working with GitHub Git repositories.

function git_dir_check() {
    if [ ! -d ".git" ]; then
        echo "Not a git repository!"
        exit
    fi
}

function remove_jekyll_site_dir() {
    # Presumably, you have "_site" in .gitignore, so it sticks around 
    # when you change branches.
    if [ -d "_site" ]; then
        rm -rf ./_site/
    fi
}

function usage() {
    echo "Usage: github [OPTION]"
    echo
    echo "  help                     print this help."
    echo "  code                     check out MASTER branch."
    echo "  pages                    check out gh-pages branch."
    echo
}

function terse_usage() {
    echo "Usage: github [OPTION]"
    echo
    echo "Try 'github help' for more options."
}

if [ $# -gt 0 ]; then
    if [ $1 == "code" ]; then
        git_dir_check
        remove_jekyll_site_dir
        git checkout master
    elif [ $1 == "pages" ]; then
        git_dir_check
        git checkout gh-pages
    elif [ $1 == "help" ]; then
        usage
    else
        echo "github: unknown option '$1'"
        terse_usage
    fi
else
    terse_usage
fi