1.\" 2.\" Copyright (c) 1994 Simon J. Gerraty 3.\" Copyright (c) 1994 Christopher G. Demetriou 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by Christopher G. Demetriou. 17.\" 3. The name of the author may not be used to endorse or promote products 18.\" derived from this software without specific prior written permission 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30.\" 31.\" $Id: ac.8,v 1.1.1.1 1994/05/18 08:00:45 csgr Exp $ 32.\" 33.Dd March 15, 1994 34.Dt AC 8 35.Os 36.Sh NAME 37.Nm ac 38.Nd connect time accounting 39.Sh SYNOPSIS 40.Nm ac 41.Op Fl dp 42.\".Op Fl c Ar console 43.Op Fl t Ar tty 44.Op Fl w Ar wtmp 45.Op Ar users ... 46.Sh DESCRIPTION 47If the file 48.Pa /var/log/wtmp 49exists, a record of individual login and logout 50times are written to it by 51.Xr login 8 52and 53.Xr init 8 , 54respectively. 55.Nm \&Ac 56examines these records and writes the accumulated connect time 57for all logins to the standard output. 58.Pp 59The options are as follows: 60.Bl -tag -width indentXXX 61.It Fl d 62Display the connect times in 24 hour chunks. 63.\" .It Fl c Ar console 64.\" Use 65.\" .Ar console 66.\" as the name of the device that local X sessions (ut_host of ":0.0") 67.\" originate from. If any login has been recorded on 68.\" .Ar console 69.\" then these X sessions are ignored unless COMPAT_SUNOS was defined at 70.\" compile time. 71.It Fl p 72Print individual users' totals. 73.It Fl t Ar tty 74Only do accounting logins on certain ttys. The 75.Ar tty 76specification can start with '!' to indicate not this 77.Ar tty 78and end with '*' to indicate all similarly named ttys. 79Multiple 80.Fl t 81flags may be specified. 82.It Fl w Ar wtmp 83Read connect time data from 84.Ar wtmp 85instead of the default file, 86.Pa /var/log/wtmp . 87.It Ar users ... 88Display totals for the given individuals only. 89.El 90.Pp 91If no arguments are given, 92.Nm ac 93displays the total connect time for all 94accounts with login sessions recorded in 95.Pa wtmp . 96.Pp 97The default 98.Pa wtmp 99file will increase without bound unless it is truncated. 100It is normally truncated by the daily scripts run 101by 102.Xr cron 8 , 103which rename and rotate the 104.Pa wtmp 105files, keeping a week's worth of data on 106hand. No login or connect time accounting is performed if 107.Pa /var/log/wtmp 108does not exist. 109.Pp 110For example, 111.Bd -literal -offset 112ac -p -t "ttyd*" > modems 113ac -p -t "!ttyd*" > other 114.Ed 115.Pp 116allows times recorded in 117.Pa modems 118to be charged out at a different rate than 119.Pa other . 120.Pp 121The 122.Nm ac 123utility exits 0 on success, and >0 if a fatal error occurs. 124.Sh FILES 125.Bl -tag -width /var/log/wtmp.[0-7] -compact 126.It Pa /var/log/wtmp 127connect time accounting file 128.It Pa /var/log/wtmp.[0-7] 129rotated files 130.El 131.Sh SEE ALSO 132.Xr init 8 , 133.Xr sa 8 , 134.Xr login 1 , 135.Xr utmp 136.\" .Sh NOTES 137.\" If COMPAT_SUNOS is defined 138.\" .Nm ac 139.\" ignores the fact that entries with ut_host of ":0.0" are not real 140.\" login sessions. Normally such entries are ignored except in the case 141.\" of a user being logged in when the 142.\" .Pa wtmp 143.\" file was rotated, in which case a login with ut_host of ":0.0" may 144.\" appear without any preceeding console logins. 145.\" If no one is logged in on the console, the user is deemed to have 146.\" logged in on at the earliest time stamp found in 147.\" .Pa wtmp . 148.\" Use of 149.\" .Pa console 150.\" allows 151.\" .Nm ac 152.\" to identify and correcty process a logout for the user. The default 153.\" value for 154.\" .Pa console 155.\" is usually correct at compile time. 156