ac prints out statistics about users' connection times in
hours based on the logins and logouts in the current /var/log/wtmp file. ac is
also capable of printing out time totals for each day (-d option), and for each
user (-p option).
accton
accton is used to turn on or turn off process accounting.
The file is normally executed at system bootup or shutdown via system init
scripts.
last
last goes through the /var/log/wtmp file and prints out
information about users' connection times.
sa
sa summarizes accounting information from previously
executed commands, software I/O operation times, and CPU times, as recorded in the
accounting record file /var/account/pacct.
lastcomm
lastcomm prints out the information about all previously
executed commands, recorded in /var/account/pacct.
