[unix-history] / .ref-BSD-3 / usr / man / man5 / wtmp.5

.TH WTMP 5 
.SH NAME
wtmp \- user login history
.SH DESCRIPTION
This
file records all logins and logouts.
Its format is exactly like
.IR utmp (5)
except that
a null user name indicates a logout on the associated
typewriter.
Furthermore, the typewriter name `~' indicates that the
system was rebooted at the indicated time;
the adjacent pair of entries with typewriter names
`|' and `}' indicate the system-maintained time
just before and just after a
.I date
command has changed the system's idea of the time.
.PP
.I Wtmp
is maintained by
.IR login (1)
and
.IR init (8).
Neither of these programs creates the file,
so if it is removed record-keeping is turned off.
It is summarized by
.IR ac (1).
.SH FILES
/usr/adm/wtmp
.SH "SEE ALSO"
utmp(5), login(1), init(8), ac(1), who(1)
Commit	Line	Data
e6817382 BJ	1	.TH WTMP 5
	2	.SH NAME
	3	wtmp \- user login history
	4	.SH DESCRIPTION
	5	This
	6	file records all logins and logouts.
	7	Its format is exactly like
	8	.IR utmp (5)
	9	except that
	10	a null user name indicates a logout on the associated
	11	typewriter.
	12	Furthermore, the typewriter name `~' indicates that the
	13	system was rebooted at the indicated time;
	14	the adjacent pair of entries with typewriter names
	15	`\|' and `}' indicate the system-maintained time
	16	just before and just after a
	17	.I date
	18	command has changed the system's idea of the time.
	19	.PP
	20	.I Wtmp
	21	is maintained by
	22	.IR login (1)
	23	and
	24	.IR init (8).
	25	Neither of these programs creates the file,
	26	so if it is removed record-keeping is turned off.
	27	It is summarized by
	28	.IR ac (1).
	29	.SH FILES
	30	/usr/adm/wtmp
	31	.SH "SEE ALSO"
	32	utmp(5), login(1), init(8), ac(1), who(1)