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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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