From my limited knowledge I think thats what it does
mysql databasename -u[username] -p[password] -e 'show tables like "phpbb\_%" | Get list of all tables that start phpbb_ grep -v Tables_in | invert the match ie now select all tables that do not start phpbb_ xargs mysqldump [dbname] -u [username] -p[password] > [dump_file] Backup those tables
A Little Knowledge Is A Very Dangerous Thing....... That Makes Me A Lethal Weapon !!!!!!!!