| 1 | .\" Copyright (c) 1980 Regents of the University of California. |
| 2 | .\" All rights reserved. The Berkeley software License Agreement |
| 3 | .\" specifies the terms and conditions for redistribution. |
| 4 | .\" |
| 5 | .\" @(#)ac.8 6.1 (Berkeley) %G% |
| 6 | .\" |
| 7 | .TH AC 8 "" |
| 8 | .UC 4 |
| 9 | .SH NAME |
| 10 | ac \- login accounting |
| 11 | .SH SYNOPSIS |
| 12 | .B /etc/ac |
| 13 | [ |
| 14 | .B \-w |
| 15 | wtmp ] [ |
| 16 | .B \-p |
| 17 | ] [ |
| 18 | .B \-d |
| 19 | ] [ people ] ... |
| 20 | .SH DESCRIPTION |
| 21 | .I Ac |
| 22 | produces a printout giving |
| 23 | connect time |
| 24 | for each user who has logged in |
| 25 | during the life of the current |
| 26 | .I wtmp |
| 27 | file. |
| 28 | A total is also produced. |
| 29 | .B \-w |
| 30 | is used to specify an alternate |
| 31 | .IR wtmp "" |
| 32 | file. |
| 33 | .B \-p |
| 34 | prints individual totals; without this option, |
| 35 | only totals are printed. |
| 36 | .B \-d |
| 37 | causes a printout for each midnight to midnight |
| 38 | period. |
| 39 | Any |
| 40 | .I people |
| 41 | will limit the |
| 42 | printout to only the specified login names. |
| 43 | If no |
| 44 | .IR wtmp "" |
| 45 | file is given, |
| 46 | .I /usr/adm/wtmp |
| 47 | is used. |
| 48 | .PP |
| 49 | The accounting file |
| 50 | .I /usr/adm/wtmp |
| 51 | is maintained by |
| 52 | .I init |
| 53 | and |
| 54 | .I login. |
| 55 | Neither of these programs creates the file, |
| 56 | so if it does not exist |
| 57 | no connect-time accounting is done. |
| 58 | To start accounting, it should be created with length 0. |
| 59 | On the other hand if the file is left undisturbed it will |
| 60 | grow without bound, so periodically any information |
| 61 | desired should be collected and the file truncated. |
| 62 | .SH FILES |
| 63 | /usr/adm/wtmp |
| 64 | .SH "SEE ALSO" |
| 65 | init(8), sa(8), login(1), utmp(5). |