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

       ac - login accounting

       /etc/ac [ -w wtmp ] [ -p ] [ -d ] [ people ] ...

       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 produced.
       -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.


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

4th Berkeley Distribution       4 February 1983                          AC(8)