AC(VIII)                     2/20/74                     AC(VIII)


     ac - login accounting


     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  undisturbed  it  will  grow

     without  bound,  so  periodically  any  information  desired

     should be collected and the file truncated.




     init (VIII), login (I), wtmp (V).