Bash script to update or checkout needed git branches

checkout

#!/usr/bin/env bash
#
# Usage:
#
# checkout BRANCH_NAME
#
# checkout master
# checkout hkraji/pr_work_in_progress
#

git rev-parse --verify $1  > /dev/null 2>&1

if [ $? == 0 ]
then
  echo "Branch $1 exists, updating branch ..."
  git checkout $1
  git pull origin $1
else
  echo "Creating branch $1 ..."
  git fetch origin $1
  git checkout -b $1 origin/$1
fi

# clear nginx cache (optional)
rm -rf /tmp/nginx