Updates Plex media server running on Ubuntu

plex-update.sh

#! /bin/bash

# Downloads and install the latest version of Plex (for Ubuntu) for your arch
# if the version available is newer than what is installed
#
# 
# by Sophie Forceno
#

arch=$(uname -m)

DL_PATH="/media/external/Software/Linux/$arch"

installed_ver=$(dpkg -s plexmediaserver | grep -Po '(?<=Version\: )(\S+)')
deburl=$(curl -s "https://plex.tv/downloads/details/1?build=linux-ubuntu-$arch&channel=16&distro=ubuntu" | grep -Po '(?<=url=\")(\S+)(?=\")')
filename=$(echo "$deburl" | awk -F'/' '{ print $7 }')
avail_ver=$(curl -s "https://plex.tv/downloads/details/1?build=linux-ubuntu-$arch&channel=16&distro=ubuntu" | grep -Po '(?<=(\" version=\"))(\S+)(?=(\"))')

if [[ "$installed_ver" = "$avail_ver" && -n "$installed_ver" && -n "$avail_ver" ]]; then 
	echo "Plexmediaserver is already up-to-date (version $installed_ver)" 
	exit 0
elif [[ "$installed_ver" != "$avail_ver" && -n "$installed_ver" && -n "$avail_ver" ]]; then
	echo "There is an update for plexmediaserver!"
	sudo rm -fv "$DL_PATH"/plex*	
	echo "Downloading plexmediaserver v$avail_ver"
	sudo wget -q "$deburl" -P "$DL_PATH"
	echo "Stopping plexmediaserver..."
	sudo service plexmediaserver stop
	echo "Installing plexmediaserver v$avail_ver"
	sudo dpkg -i "$DL_PATH"/"$filename"
	installed_ver=$(dpkg -s plexmediaserver | grep -Po '(?<=Version\: )(\S+)')
	echo "Plex has been updated to v$installed_ver!"
	exit 0
else
	echo "Uh oh. Can't get latest version. Do you have an internet connection?"
	exit 1
fi