Open Github Diff comparing current branch to branch specified.

ghd.sh

#!/bin/bash
# Save this file somewhere    # ~/bin/ghd.sh
# Create an alias in .bashrc  # alias ghd='bash ~/bin/ghd.sh'
#
# Usage: ghd <name_of_branch_on_github>
# Browser will open showing you the diff between current branch and the branch specified

DIFF_BRANCH=$1 
if [[ -z "$DIFF_BRANCH" ]]; then
  echo "Please specifiy a branch to compare."
  exit 1
fi

GIT=$(which git)
BRANCH=$($GIT branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/\1/')
REMOTE=$($GIT remote -v | grep fetch | sed 's/\(.*github.com\)[:|/]\(.*\).git (fetch)/\2/')
open "https://github.com/$REMOTE/compare/$DIFF_BRANCH...$BRANCH"