projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| e6817382 BJ |
1 | .TH AC 1M |
| 2 | .SH NAME | |
| 3 | ac \- login accounting | |
| 4 | .SH SYNOPSIS | |
| 5 | .B ac | |
| 6 | [ | |
| 7 | .B \-w | |
| 8 | wtmp ] [ | |
| 9 | .B \-p | |
| 10 | ] [ | |
| 11 | .B \-d | |
| 12 | ] [ people ] ... | |
| 13 | .SH DESCRIPTION | |
| 14 | .I Ac | |
| 15 | produces a printout giving | |
| 16 | connect time | |
| 17 | for each user who has logged in | |
| 18 | during the life of the current | |
| 19 | .I wtmp | |
| 20 | file. | |
| 21 | A total is also produced. | |
| 22 | .B \-w | |
| 23 | is used to specify an alternate | |
| 24 | .IR wtmp "" | |
| 25 | file. | |
| 26 | .B \-p | |
| 27 | prints individual totals; without this option, | |
| 28 | only totals are printed. | |
| 29 | .B \-d | |
| 30 | causes a printout for each midnight to midnight | |
| 31 | period. | |
| 32 | Any | |
| 33 | .I people | |
| 34 | will limit the | |
| 35 | printout to only the specified login names. | |
| 36 | If no | |
| 37 | .IR wtmp "" | |
| 38 | file is given, | |
| 39 | .I /usr/adm/wtmp | |
| 40 | is used. | |
| 41 | .PP | |
| 42 | The accounting file | |
| 43 | .I /usr/adm/wtmp | |
| 44 | is maintained by | |
| 45 | .I init | |
| 46 | and | |
| 47 | .I login. | |
| 48 | Neither of these programs creates the file, | |
| 49 | so if it does not exist | |
| 50 | no connect-time accounting is done. | |
| 51 | To start accounting, it should be created with length 0. | |
| 52 | On the other hand if the file is left undisturbed it will | |
| 53 | grow without bound, so periodically any information | |
| 54 | desired should be collected and the file truncated. | |
| 55 | .SH FILES | |
| 56 | /usr/adm/wtmp | |
| 57 | .SH "SEE ALSO" | |
| 58 | init(8), login(1), utmp(5). |