# 2.11BSD#431 - /usr/man/cat8/ac.0

    AC(8)		    UNIX Programmer'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 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.

    FILES
         /usr/adm/wtmp

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

    Printed 11/26/99	November 16, 1996			1

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