Piwik automatic update - bash script

piwik-update.sh

#!/bin/bash

# Start this scipt above the /piwik directory.
# We assume that the webserver runs under www-data.

# download & verify
wget -nv "http://builds.piwik.org/piwik.zip" || exit 1
wget -nv "http://builds.piwik.org/piwik.zip.asc" || exit 2
gpg --verify piwik.zip.asc || exit 3

# update files in piwik/ directory
unzip -o piwik.zip "piwik/*" | sed 's/.*/./' | paste -s -d'.'

# show version
echo -n "New PIWIK Version: "
grep 'const VERSION' piwik/core/Version.php|cut -d"'" -f2 || echo "ERROR: Failed to detect version" >&2

# DB update
# double it to make sure
piwik/console core:update --no-interaction
piwik/console core:update --no-interaction

# clean up
# no need to `rm`, see: "How to install Piwik.html"
rm -v piwik.zip piwik.zip.asc
chown -R www-data:www-data . || echo "ERROR: Failed to set permissions." >&2

# purge opcache
# see: https://github.com/szepeviktor/wplib/blob/master/share/wplib/opcache-del-dir.php
echo -n "Purge cache status: "
php /usr/local/share/wplib/opcache-del-dir.php "/var/www/piwik/piwik"; echo