Notes 10 7 - Herrscherr0Z/SYS255 GitHub Wiki

grep -v '^#' /etc/postfix/main.conf = removes everything that has a comment

:grep '.' = removes everything with the period

myorigin = $myhostname

egrep -i 'pop3:imap' /etc/services

netstat -an (show all open ports)

ps -ef (shows all running processes)