An Arch+pacaur update script

update.sh

#!/bin/bash

function setTime() {
	echo $1 > ~/.lastupdate
}

log=true

if [ ! -f ~/.lastupdate ]
then
	echo 0 > ~/.lastupdate
fi

while getopts ":qns:b:" flag; do
	case $flag in
	b)
		lastUpdate=`cat ~/.lastupdate`
		currentTime=`date +%s`
		delta=$(($currentTime - $lastUpdate))
		if [ "$delta" -ge "$OPTARG" ]
		then
			echo "Don't forget to update"
		fi
		exit 0
	;;
	s)
		if [ "$OPTARG" = "now" ]
		then
			setTime `date +%s`
		else
			setTime $OPTARG
		fi
		exit 0
	;;
	q)
		lastUpdate=`cat ~/.lastupdate`
		currentTime=`date +%s`
		delta=$(($currentTime - $lastUpdate))
		days=`echo $delta/86400 | bc`
		hours=`echo $delta/3600 % 24 | bc`
		minutes=`echo $delta/60 % 60 | bc`
		seconds=`echo $delta % 60 | bc`
		echo Last update was $days days, $hours hours, $minutes minutes and $seconds seconds ago.
		exit 0
	;;
	n)
		log=false
	;;
	\?)
		echo "Syntax: update [-qn] [-s (time/\"now\")] [-b time]" >&2
		echo "Arguments:"
		echo "    q: Get time since last update"
		echo "    s: Set last update to (time) or the current time if \"now\" is given"
		echo "    n: Update, but don't set timestamp"
		echo "    b: Print \"Don't forget to update\" if update was longer than (time) seconds ago and exits (used in .bashrc)"
		exit 2
	;;
	:)
		echo "Option -$OPTARG requires an argument, use -? for a list of arguments" >&2
		exit 1
	esac
done

time pacaur -Syu

exitStatus=$?

echo Exit status: $exitStatus

if [ $exitStatus = 0 ] && [ $log = true ]
then
	echo "Writing"
	setTime `date +%s`
fi