To become root, type su and then enter the password when prompted.
Some distros use sudo for root privileges.
i.e sudo apt-get install package.
/var can be anywhere on the partition layout.
For security, /var will be on a separate partition. In case of a DOS attack, only the /var partition will be filled up from syslod writing to various log files. This will continue until disk space is exhausted.
Last edited by dv502; 12-11-2008 at 10:01 PM.