Install CyanogenMod updates on an encrypted Nexus 5

gistfile1.sh

#!/bin/bash

if [ -z "$1" ]; then
	read -p "No file specified, would you like to download the latest version? (Y/n)" PROMPT
	if [ "$PROMPT" == "n" ]; then
		echo "Will not download update."
		exit
	fi
	URL="http://download.cyanogenmod.org`curl -L http://download.cyanogenmod.org/\?type\=snapshot\&device\=hammerhead 2>/dev/null | perl -wlne 'print $1 if /<a href="(\/get\/jenkins\/\d+\/[^"]+\.zip)">/i' | head -n1`"
	FILENAME=`basename $URL`
	echo "Downloading $URL"
	curl -L "$URL" > "$FILENAME"
else
	FILENAME="$1"
fi

if ! [ -f $FILENAME ]; then
	echo "The update file ($FILENAME) couldn't be found..."
	exit 1
fi
echo "Rebooting phone into recovery!"
adb reboot recovery
echo "Waiting for device to come back online..."
while ! adb shell "echo test" 2>/dev/null 1>/dev/null; do
	sleep 1
done
adb shell "mount -t tmpfs none /data"
adb shell "mkdir /data/media"
echo "Pushing update..."
adb push $FILENAME /sdcard/
echo "Now install the update from the rom manager menus."