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.Dd February 27, 2020
.Dt TZRELOAD 1M
.Os
.Sh NAME
.Nm tzreload
.Nd notify timezone update
.Sh SYNOPSIS
.Nm Op Fl a
.Sh DESCRIPTION
The
.Nm
command triggers processes to reread timezone information.
The timezone information is cached in each process.
In response to a
.Nm
command, this cache is updated on the next call to
.Xr ctime 3C
and
.Xr mktime 3C
by each process.
By default,
.Nm
only triggers this update for the current zone.
.Pp
In addition to updating processes, the
.Nm
command also notifies
.Xr cron 1M
to reinitialize the job scheduler with the new timezone information.
.Sh OPTIONS
The following options are supported:
.Bl -tag -width Ds
.It Fl a
Update processes in all zones.
.El
.Sh FILES
.Bl -tag -width Ds
.It Pa /usr/share/lib/zoneinfo
Standard zone information directory.
.El
.Sh INTERFACE STABILITY
.Sy Committed
.Sh SEE ALSO
.Xr cron 1M ,
.Xr zdump 1M ,
.Xr zic 1M ,
.Xr zoneadm 1M ,
.Xr ctime 3C ,
.Xr mktime 3C ,
.Xr attributes 5
.Sh NOTES
Although
.Nm
reinitializes
.Xr cron 1M ,
applications that are affected by timezone changes still need to be restarted or
reinitialized if they do not reread the new timezone information before timezone
changes take place.