Jekyll/Amazon S3/Dropbox cron script

jekyll_s3_dropbox.sh

#!/bin/bash
export PATH="$PATH"
############ CHANGE VARS BELOW ##############
BASH_ENV="/home/ubuntu/.bashrc"
sourcedir="/home/ubuntu/Dropbox"
destdir="/home/ubuntu/_site"
log="/home/ubuntu/jekyll_build.log"
s3_website_confdir="/home/ubuntu"
dropbox="/opt/dropbox/dropbox.py"
jekyll="/home/ubuntu/.rvm/gems/ruby-2.3.0/wrappers/jekyll"
s3_website="/home/ubuntu/.rvm/gems/ruby-2.3.0/wrappers/s3_website"
############# CHANGE VARS ABOVE #############
#
#	Jekyll/Amazon S3/Dropbox cron script:
#
#	This script does the following:
#
#	1) stops dropbox sync
#	2) incrementally builds a jekyll site from the user's Dropbox
#	3) 'cleans' blank lines from output HTM(L) and XML files with sed
#	4) uploads built files to s3 via the s3_website gem
#	5) restarts dropbox sync
# 	6) logs the output
#
#	Assumptions:
#
#		Dropbox client is running as a daemon
#		'jekyll --build' works for this user
#		's3_website push' works for this user
#
#	Warnings:
#
#		Error handling is rudimentary at best. Jekyll's failure
#		methods have varying degrees of unpredictable output. If
#		a '_config.yml' exists in your source folder and an 'index'
#		exists in the destination after the build, this script will
#		push its output to your s3 bucket even if the build is broken!
#   		If you run this on a BSD (including OSX) with a POSIX sed, the
#   		sed command will likely need to be modified!
#
#	Don't forget to add the output log to logrotate.
#
#	Optimally, run this script in a user's cron, no elevated privileges
#	are required if the associated files are all accessible to the user.
#	If additional paths are required, modify the PATH statement above
#	by adding a : followed by more paths. Ex:
#
#		export PATH="$PATH:/some/where/bin:/some/where/else/bin"
#
#
sourcecheck="$(ls "$sourcedir" | grep _config.yml)"
status="$($dropbox status)"
index="$(ls "$destdir" | grep index)"
s3config="$(ls "$s3_website_confdir" | grep s3_website.yml)"
if [[ -z "$sourcecheck" ]] || [[ -z "$s3config" ]] || [ "$status" != "Up to date" ]; then
	prefail="$(echo -e 'Either dropbox is not idle, or a required component was not found.\nCheck config variables and try again.' && $dropbox start && echo 'Failed on' `date` && echo '---')"
	echo "${prefail}" >> "$log"
	exit 1;
else
	build="$(echo 'Began on' `date` && $dropbox stop && $jekyll build --source "$sourcedir" --destination "$destdir" --incremental)"
	echo "${build}" >>  "$log"
	find $destdir -type f \( -name "*.htm*" -o -name "*.xml" \) -exec sed -i '/^\s*$/d' {} \;
fi

if [[ -z "$index" ]]; then
	buildfail="$(echo 'No index file found in destination, the jekyll build may have failed. No s3 upload was performed' && $dropbox start && echo 'Failed on' `date` && echo '---')"
	echo "${buildfail}" >> "$log"
	exit 1;
else
	s3push="$(cd "$destdir" && cd "../" && $s3_website push --config-dir "$s3_website_confdir" && $dropbox start && echo 'Success on' `date` && echo '---')"
	echo "${s3push}" >> "$log"
fi
$dropbox start
exit 0;