wp-optimize.sh

#!/bin/bash
# credit: https://gist.github.com/actuallymentor/89b643f03df4776112c4
# credit: https://gist.github.com/macbleser/9136424

WP_OWNER=$1 # <-- wordpress owner
WP_GROUP=$2 # <-- wordpress group
WP_ROOT=$4 # <-- wordpress root directory
WS_GROUP=$3 # <-- webserver group

yes | apt-get install jpegoptim;
yes | apt-get install pngquant;

# Optimize JPEG
find "${WP_ROOT}/wp-content/uploads" -name '*.jpg' -exec jpegoptim --max=80 {} \;

# Optimize PNG
find "${WP_ROOT}/wp-content/uploads" -name '*.png' -exec pngquant --ext .png --force 256 {} \;
 
# reset to safe defaults
find ${WP_ROOT} -exec chown ${WP_OWNER}:${WP_GROUP} {} \;
find ${WP_ROOT} -type d -exec chmod 755 {} \;
find ${WP_ROOT} -type f -exec chmod 644 {} \;
 
# allow wordpress to manage wp-config.php (but prevent world access)
chgrp ${WS_GROUP} ${WP_ROOT}/wp-config.php
chmod 660 ${WP_ROOT}/wp-config.php
 
# allow wordpress to manage .htaccess
touch ${WP_ROOT}/.htaccess
chgrp ${WS_GROUP} ${WP_ROOT}/.htaccess
chmod 664 ${WP_ROOT}/.htaccess
 
# allow wordpress to manage wp-content
find ${WP_ROOT}/wp-content -exec chgrp ${WS_GROUP} {} \;
find ${WP_ROOT}/wp-content -type d -exec chmod 775 {} \;
find ${WP_ROOT}/wp-content -type f -exec chmod 664 {} \;