bash script: git pull && pass rails migrations if need

rpull

#!/bin/bash
#
# git pull && run migratoins if need

dbtime=`stat -f "%m" db/migrate`
schema=`stat -f "%m" db/schema.rb`

git pull || exit

# If either schema or migrate dir has been changed, run migrations and test db prepare
# in general, we need not to check schema despite the case that existing migration has
# been changed. It, most likely, will cause problems anyway
if [[ $dbtime != `stat -f "%m" db/migrate` || $schema != `stat -f "%m" db/schema.rb` ]]; then
  echo "Starting migrations"
  bundle exec rake db:migrate db:test:prepare
fi