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AC(8)			  BSD 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 lo-
     gout times	are written to it by login(1) and init(8), respectively.  The
     ac	utility	examines these records and writes the accumulated connect 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 specifica-
		tion 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 ac-
     counts 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)

BSD			       January 21, 2010				   BSD

NAME | SYNOPSIS | DESCRIPTION | FILES | EXIT STATUS | EXAMPLES | SEE ALSO

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