Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
.\" .BR STAILQ_REMOVE (),
.\" this macro does not traverse the entire tail queue.
.SS Other features
-.PP
.BR STAILQ_CONCAT ()
concatenates the tail queue headed by
.I head2
.br
.I /var/log/wtmp
.SH CONFORMING TO
-.PP
POSIX.1 does not specify a
.I utmp
structure, but rather one named
.\" informative messages such as \fB"new time"\fP in the line field.
System V has no \fIut_host\fP or \fIut_addr_v6\fP fields.
.SH NOTES
-.PP
Unlike various other
systems, where utmp logging can be disabled by removing the file, utmp
must always exist on Linux.
the monotonic and boot-time clocks to maintain consistent values
during container migration and checkpoint/restore.
.SH EXAMPLES
-.PP
The following shell session demonstrates the operation of time namespaces.
We begin by displaying the inode number of the time namespace
of a shell in the initial time namespace: