--sync-wp-content
Update /var/lib/wordpress/wp-content/{plugins,themes}/ based on what's available in
/usr/share/wordpress/wp-content/{plugins,themes}. This command is run by the package's postinst
script every time that dpkg installs a package that modifies something in
/usr/share/wordpress/wp-content/.
--purge-wp-content
Remove all symlinks from /var/lib/wordpress/wp-content/{plugins,themes}/ that point to corresponding
directories in /usr/share/wordpress/wp-content/{plugins,themes}. This command is run by the package's
prerm script to ensure everything is properly removed.