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

NAME
       ac -- connect time accounting

SYNOPSIS
       ac [-dp]	[-t tty] [-w wtmp] [users ...]

DESCRIPTION
       If  the	file /var/log/utx.log exists, a	record of individual login and
       logout times are	written	to it by login(1) and  init(8),	 respectively.
       The  ac	utility	examines these records and writes the accumulated con-
       nect time (in hours) for	all logins to the standard output.

       The options are as follows:

       -d	  Display the connect times in 24 hour chunks.

       -p	  Print	individual users' totals.

       -t tty	  Only do accounting logins on certain ttys.  The tty specifi-
		  cation can start with	'!' to indicate	not this tty  and  end
		  with	'*' to indicate	all similarly named ttys.  Multiple -t
		  flags	may be specified.

       -w wtmp	  Read connect time data from  wtmp  instead  of  the  default
		  file,	/var/log/utx.log.

       users ...  Display totals for the given individuals only.

       If  no  arguments are given, ac displays	the total connect time for all
       accounts	with login sessions recorded in	utx.log.

       The default utx.log file	will increase without bound unless it is trun-
       cated.  It is normally truncated	by the daily scripts run  by  cron(8),
       which  rename  and  rotate the utx.log files, keeping a week's worth of
       data on hand.  No login or connect  time	 accounting  is	 performed  if
       /var/log/utx.log	does not exist.

FILES
       /var/log/utx.log	 connect time accounting file

EXIT STATUS
       The ac utility exits 0 on success, and >0 if an error occurs.

EXAMPLES
       Allow  times  recorded  in modems to be charged out at a	different rate
       than other:

	     ac	-p -t "ttyd*" >	modems
	     ac	-p -t "!ttyd*" > other

SEE ALSO
       login(1), getutxent(3), init(8),	sa(8)

HISTORY
       An ac command appeared in Version 5 AT&T	UNIX.  This version of ac  was
       written for NetBSD 0.9A from the	specification provided by various sys-
       tems' manual pages.

FreeBSD	13.2		       February	14, 2020			 AC(8)
NAME | SYNOPSIS | DESCRIPTION | FILES | EXIT STATUS | EXAMPLES | SEE ALSO | HISTORY

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=ac&manpath=FreeBSD+14.1-RELEASE+and+Ports>

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