Git pre-commit hook to launch rake

pre-commit

#!/bin/bash

# Adapted from http://jimneath.org/2012/05/05/precompile-assets-using-a-git-hook.html

# source rvm and .rvmrc if present
[ -s "$HOME/.rvm/scripts/rvm" ] && . "$HOME/.rvm/scripts/rvm"
[ -s "$PWD/.rvmrc" ] && . "$PWD/.rvmrc"
 
# precompile assets if any have been updated
if git diff-index --name-only HEAD | egrep '^css/sass' >/dev/null ; then
  echo 'Precompiling assets...'
  rake sass
  git add css/*.css
fi