bsd man page for ac

AC(8)							      System Manager's Manual							     AC(8)

NAME
       ac - login accounting

SYNOPSIS
       /usr/sbin/ac [ -w wtmp ] [ -p ] [ -d ] [ people ] ...

DESCRIPTION
       Ac  produces a printout giving connect time for each user who has logged in during the life of the current wtmp file.  A total is also pro-
       duced.  -w is used to specify an alternate wtmp file.  -p prints individual totals; without this  option,  only	totals	are  printed.	-d
       causes  a printout for each midnight to midnight period.  Any people will limit the printout to only the specified login names.	If no wtmp
       file is given, /usr/adm/wtmp is used.

       The accounting file /usr/adm/wtmp is maintained by init and login.  Neither of these programs creates the file, so if it does not exist	no
       connect-time  accounting  is  done.  To start accounting, it should be created with length 0.  On the other hand if the file is left undis-
       turbed it will grow without bound, so periodically any information desired should be collected and the file truncated.

FILES
       /usr/adm/wtmp

SEE ALSO
       init(8), sa(8), login(1), utmp(5).

4th Berkeley Distribution					 November 16, 1996							     AC(8)