^\w{3} [ :0-9]{11} [._[:alnum:]-]+ login\[[0-9]+\]: ROOT LOGIN on '(/dev/)?tty[0-9]'$ ^\w{3} [ :0-9]{11} [._[:alnum:]-]+ login: ROOT LOGIN pts/[0-9] FROM [._[:alnum:]-]+$ ^\w{3} [ :0-9]{11} [._[:alnum:]-]+ newgrp\[[0-9]+\]: user '[[:alnum:]-]+' \(login '[[:alnum:]-]+' on (pts/[0-9]+|tty[0-9]+)\) (returned|switched) to group '[[:alnum:]-]+'$