Having just done some work on a Linux webserver, here’s some articles I recently used to make tasks just a bit easier.
- Recover MySQL root password
 - How to Move the MySQL data directory in Ubuntu (Can be used for migrating your MySQL install to different system)
 - How to kill a running process using PID
 - How to edit and understand /etc/fstab
 - How to mount filesystems in Linux
mount -t ext3 /dev/otherdrive /mountdir - Get hard disk info (but please be careful with this one):
fdisk -l - How To Speed Up WordPress With Nginx And WP Super Cache
 - Linux / Unix tar command
 - logrotate
 - mysqldump
 - Backing up your database using straight MySQL commands
 - Perfect Setup: Ubuntu Hardy+Nginx+MySQL5+PHP5+WordPress