‘spar’ is used to select records from a UNIX process accounting file. It is usually faster than most ‘lastcomm’s and significantly more flexible and powerful.
You can download it from the following link: https://packetstormsecurity.com/files/download/10775/spar-1.2.tar.gz
Source: https://packetstormsecurity.com/files/10775/Spar-UNIX-Process-Selector-1.2.html