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-.\"
-.\" Copyright (c) 1994 Simon J. Gerraty
-.\" Copyright (c) 1994 Christopher G. Demetriou
-.\" All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\" notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\" notice, this list of conditions and the following disclaimer in the
-.\" documentation and/or other materials provided with the distribution.
-.\" 3. All advertising materials mentioning features or use of this software
-.\" must display the following acknowledgement:
-.\" This product includes software developed by Christopher G. Demetriou.
-.\" 3. The name of the author may not be used to endorse or promote products
-.\" derived from this software without specific prior written permission
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
-.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
-.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
-.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
-.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
-.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
-.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-.\"
-.\" $FreeBSD$
-.\"
-.Dd March 15, 1994
-.Dt AC 8
-.Os
-.Sh NAME
-.Nm ac
-.Nd connect time accounting
-.Sh SYNOPSIS
-.Nm
-.Op Fl dp
-.\".Op Fl c Ar console
-.Op Fl t Ar tty
-.Op Fl w Ar wtmp
-.Op Ar users ...
-.Sh DESCRIPTION
-If the file
-.Pa /var/log/utx.log
-exists, a record of individual login and logout
-times are written to it by
-.Xr login 1
-and
-.Xr init 8 ,
-respectively.
-The
-.Nm
-utility
-examines these records and writes the accumulated connect time (in hours)
-for all logins to the standard output.
-.Pp
-The options are as follows:
-.Bl -tag -width indentXXX
-.It Fl d
-Display the connect times in 24 hour chunks.
-.\" .It Fl c Ar console
-.\" Use
-.\" .Ar console
-.\" as the name of the device that local X sessions (ut_host of ":0.0")
-.\" originate from. If any login has been recorded on
-.\" .Ar console
-.\" then these X sessions are ignored unless COMPAT_SUNOS was defined at
-.\" compile time.
-.It Fl p
-Print individual users' totals.
-.It Fl t Ar tty
-Only do accounting logins on certain ttys.
-The
-.Ar tty
-specification can start with '!' to indicate not this
-.Ar tty
-and end with '*' to indicate all similarly named ttys.
-Multiple
-.Fl t
-flags may be specified.
-.It Fl w Ar wtmp
-Read connect time data from
-.Ar wtmp
-instead of the default file,
-.Pa /var/log/utx.log .
-.It Ar users ...
-Display totals for the given individuals only.
-.El
-.Pp
-If no arguments are given,
-.Nm
-displays the total connect time for all
-accounts with login sessions recorded in
-.Pa utx.log .
-.Pp
-The default
-.Pa utx.log
-file will increase without bound unless it is truncated.
-It is normally truncated by the daily scripts run
-by
-.Xr cron 8 ,
-which rename and rotate the
-.Pa utx.log
-files, keeping a week's worth of data on
-hand.
-No login or connect time accounting is performed if
-.Pa /var/log/utx.log
-does not exist.
-.Pp
-For example,
-.Bd -literal -offset
-ac -p -t "ttyd*" > modems
-ac -p -t "!ttyd*" > other
-.Ed
-.Pp
-allows times recorded in
-.Pa modems
-to be charged out at a different rate than
-.Pa other .
-.Sh FILES
-.Bl -tag -width /var/log/utx.log -compact
-.It Pa /var/log/utx.log
-connect time accounting file
-.El
-.Sh EXIT STATUS
-.Ex -std
-.Sh SEE ALSO
-.Xr login 1 ,
-.Xr getutxent 3 ,
-.Xr init 8 ,
-.Xr sa 8
-.\" .Sh NOTES
-.\" If COMPAT_SUNOS is defined
-.\" .Nm ac
-.\" ignores the fact that entries with ut_host of ":0.0" are not real
-.\" login sessions. Normally such entries are ignored except in the case
-.\" of a user being logged in when the
-.\" .Pa wtmp
-.\" file was rotated, in which case a login with ut_host of ":0.0" may
-.\" appear without any preceding console logins.
-.\" If no one is logged in on the console, the user is deemed to have
-.\" logged in on at the earliest time stamp found in
-.\" .Pa wtmp .
-.\" Use of
-.\" .Pa console
-.\" allows
-.\" .Nm ac
-.\" to identify and correctly process a logout for the user. The default
-.\" value for
-.\" .Pa console
-.\" is usually correct at compile time.
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