1.\" $OpenBSD: grdc.6,v 1.14 2022/09/24 16:07:26 florian Exp $ 2.\" 3.\" Copyright 2002 Amos Shapir. Public domain. 4.\" 5.Dd $Mdocdate: September 24 2022 $ 6.Dt GRDC 6 7.Os 8.Sh NAME 9.Nm grdc 10.Nd grand digital clock (curses) 11.Sh SYNOPSIS 12.Nm grdc 13.Op Fl s 14.Op Ar number 15.Sh DESCRIPTION 16.Nm 17runs a digital clock made of reverse-video blanks on a curses 18compatible screen. 19With an optional numeric argument 20.Ar number 21it stops after 22.Ar number 23seconds (defaulting to never). 24The optional 25.Fl s 26flag makes digits scroll as they change. 27If the terminal is too slow to keep up, 28.Nm 29skips seconds. 30Pressing the 31.Sq q 32key exits the program. 33.Sh ENVIRONMENT 34.Bl -tag -width Ds 35.It Ev TZ 36The time zone to use for displaying the time. 37It is normally specified as a pathname relative to 38.Pa /usr/share/zoneinfo , 39though see 40.Xr tzset 3 41for more information. 42If this variable is not set, the time zone is determined based on 43.Pa /etc/localtime . 44.El 45.Sh AUTHORS 46.An -nosplit 47.An Amos Shapir , 48modified for curses by 49.An John Lupien . 50