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.\" $FreeBSD$ 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 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 1 52and 53.Xr init 8 , 54respectively. 55The 56.Nm 57utility 58examines these records and writes the accumulated connect time (in hours) 59for all logins to the standard output. 60.Pp 61The options are as follows: 62.Bl -tag -width indentXXX 63.It Fl d 64Display the connect times in 24 hour chunks. 65.\" .It Fl c Ar console 66.\" Use 67.\" .Ar console 68.\" as the name of the device that local X sessions (ut_host of ":0.0") 69.\" originate from. If any login has been recorded on 70.\" .Ar console 71.\" then these X sessions are ignored unless COMPAT_SUNOS was defined at 72.\" compile time. 73.It Fl p 74Print individual users' totals. 75.It Fl t Ar tty 76Only do accounting logins on certain ttys. 77The 78.Ar tty 79specification can start with '!' to indicate not this 80.Ar tty 81and end with '*' to indicate all similarly named ttys. 82Multiple 83.Fl t 84flags may be specified. 85.It Fl w Ar wtmp 86Read connect time data from 87.Ar wtmp 88instead of the default file, 89.Pa /var/log/wtmp . 90.It Ar users ... 91Display totals for the given individuals only. 92.El 93.Pp 94If no arguments are given, 95.Nm 96displays the total connect time for all 97accounts with login sessions recorded in 98.Pa wtmp . 99.Pp 100The default 101.Pa wtmp 102file will increase without bound unless it is truncated. 103It is normally truncated by the daily scripts run 104by 105.Xr cron 8 , 106which rename and rotate the 107.Pa wtmp 108files, keeping a week's worth of data on 109hand. 110No login or connect time accounting is performed if 111.Pa /var/log/wtmp 112does not exist. 113.Pp 114For example, 115.Bd -literal -offset 116ac -p -t "ttyd*" > modems 117ac -p -t "!ttyd*" > other 118.Ed 119.Pp 120allows times recorded in 121.Pa modems 122to be charged out at a different rate than 123.Pa other . 124.Sh FILES 125.Bl -tag -width /var/log/wtmp -compact 126.It Pa /var/log/wtmp 127connect time accounting file 128.El 129.Sh EXIT STATUS 130.Ex -std 131.Sh SEE ALSO 132.Xr login 1 , 133.Xr utmp 5 , 134.Xr init 8 , 135.Xr sa 8 136.\" .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 preceding 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 correctly process a logout for the user. The default 153.\" value for 154.\" .Pa console 155.\" is usually correct at compile time. 156