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.\" $OpenBSD: grdc.6,v 1.14 2022/09/24 16:07:26 florian Exp $
.\"
.\" Copyright 2002 Amos Shapir. Public domain.
.\"
.Dd $Mdocdate: September 24 2022 $
.Dt GRDC 6
.Os
.Sh NAME
.Nm grdc
.Nd grand digital clock (curses)
.Sh SYNOPSIS
.Nm grdc
.Op Fl s
.Op Ar number
.Sh DESCRIPTION
.Nm
runs a digital clock made of reverse-video blanks on a curses
compatible screen.
With an optional numeric argument
.Ar number
it stops after
.Ar number
seconds (defaulting to never).
The optional
.Fl s
flag makes digits scroll as they change.
If the terminal is too slow to keep up,
.Nm
skips seconds.
Pressing the
.Sq q
key exits the program.
.Sh ENVIRONMENT
.Bl -tag -width Ds
.It Ev TZ
The time zone to use for displaying the time.
It is normally specified as a pathname relative to
.Pa /usr/share/zoneinfo ,
though see
.Xr tzset 3
for more information.
If this variable is not set, the time zone is determined based on
.Pa /etc/localtime .
.El
.Sh AUTHORS
.An -nosplit
.An Amos Shapir ,
modified for curses by
.An John Lupien .
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