Update rails from git on commits

update-from-git.sh

#!/bin/sh
#
# Update rails from git on commits
# Author: Troex Nevelin <troex@fury.scancode.ru>

cd /home/alex/smartspace_development

if [ -f .update_in_progress ]; then
	exit 0 # exit if in progress or error happend
fi

git pull --quiet 2>&1 > .update_in_progress 
if [ $? -ne 0 ]; then
	echo "ERROR auto updating development at `date`"
	cat .update_in_progress
	exit 1
fi

LAST_COMMIT=`cat .last_commit`
CURRENT_COMMIT=`git rev-parse HEAD`

if [ "$LAST_COMMIT" = "$CURRENT_COMMIT" ]; then
	rm .update_in_progress
	#echo "nothing to update"
	exit 0 # nothing changed
fi

# updating
echo "Updating `pwd` at `date`"
bundle exec rake db:migrate
/etc/init.d/unicorn.sh restart smartspace-development
echo $CURRENT_COMMIT > .last_commit
rm .update_in_progress