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1.1 ! root 1: .\" @(#)wtmp.5 4.1 (Berkeley) 5/15/85 ! 2: .\" ! 3: .TH WTMP 5 ! 4: .AT 3 ! 5: .tr || ! 6: .SH NAME ! 7: wtmp \- user login history ! 8: .SH DESCRIPTION ! 9: This ! 10: file records all logins and logouts. ! 11: Its format is exactly like ! 12: .IR utmp (5) ! 13: except that ! 14: a null user name indicates a logout on the associated ! 15: typewriter. ! 16: Furthermore, the typewriter name `~' indicates that the ! 17: system was rebooted at the indicated time; ! 18: the adjacent pair of entries with typewriter names ! 19: `|' and `}' indicate the system-maintained time ! 20: just before and just after a ! 21: .I date ! 22: command has changed the system's idea of the time. ! 23: .PP ! 24: .I Wtmp ! 25: is maintained by ! 26: .IR login (1) ! 27: and ! 28: .IR init (8). ! 29: Neither of these programs creates the file, ! 30: so if it is removed record-keeping is turned off. ! 31: It is summarized by ! 32: .IR ac (1). ! 33: .SH FILES ! 34: /usr/adm/wtmp ! 35: .SH "SEE ALSO" ! 36: utmp(5), login(1), init(8), ac(1), who(1)
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