If you ever suspect your system has been hacked, one of the first tools I check against is unhide. It will let you know if any processes (or ports) are hidden from the system. It can be installed with all major package systems (apt/yum/ports/etc) or you can download it directly from the developers website @ http://www.unhide-forensics.info/. To use the application: unhide proc unhide sys unhide brute also bundled with the application…
Here’s a simple MySQL backup script to backup all of your databases at once (and then compress the backup with bzip2) to be used in a crontab: /usr/bin/mysqldump –all-databases | /usr/bin/bzip2 > /backup/mysql-`date +%Y-%m-%d`.bz2 Be sure to change the application paths as needed (you can use the application whereis for this purpose) and change the backup location to wherever you like.
Here are a few simple commands to use from the command line to view and manage the exim queue. List total emails in the queue: exim -bpc List all emails in the queue: exim -bp Get the headers from an email using the message-id: exim -Mvh <message-id> Get the email body from an email using message-id: exim -Mvb <message-id> Clear the queue: exim -bp | awk ‘/^…