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1.1 ! root 1: .TH AC 8 "4 February 1983" ! 2: .UC 4 ! 3: .SH NAME ! 4: ac \- login accounting ! 5: .SH SYNOPSIS ! 6: .B /etc/ac ! 7: [ ! 8: .B \-w ! 9: wtmp ] [ ! 10: .B \-p ! 11: ] [ ! 12: .B \-d ! 13: ] [ people ] ... ! 14: .SH DESCRIPTION ! 15: .I Ac ! 16: produces a printout giving ! 17: connect time ! 18: for each user who has logged in ! 19: during the life of the current ! 20: .I wtmp ! 21: file. ! 22: A total is also produced. ! 23: .B \-w ! 24: is used to specify an alternate ! 25: .IR wtmp "" ! 26: file. ! 27: .B \-p ! 28: prints individual totals; without this option, ! 29: only totals are printed. ! 30: .B \-d ! 31: causes a printout for each midnight to midnight ! 32: period. ! 33: Any ! 34: .I people ! 35: will limit the ! 36: printout to only the specified login names. ! 37: If no ! 38: .IR wtmp "" ! 39: file is given, ! 40: .I /usr/adm/wtmp ! 41: is used. ! 42: .PP ! 43: The accounting file ! 44: .I /usr/adm/wtmp ! 45: is maintained by ! 46: .I init ! 47: and ! 48: .I login. ! 49: Neither of these programs creates the file, ! 50: so if it does not exist ! 51: no connect-time accounting is done. ! 52: To start accounting, it should be created with length 0. ! 53: On the other hand if the file is left undisturbed it will ! 54: grow without bound, so periodically any information ! 55: desired should be collected and the file truncated. ! 56: .SH FILES ! 57: /usr/adm/wtmp ! 58: .SH "SEE ALSO" ! 59: init(8), sa(8), login(1), utmp(5).
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