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2 .\" Copyright 2020 Thomas E. Dickey *
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30 .\" $Id: gdc.6,v 1.5 2020/02/02 23:34:34 tom Exp $
33 gdc \- grand digital clock (curses)
35 .B gdc \fP[\fIoptions\fP] [\fIn\fP]
38 runs a digital clock made of reverse-video blanks on a terminal screen.
39 If the terminal supports color, the clock is drawn in red.
40 You can make the clock stop, pause or resume by pressing a ``q'',
41 ``s'' or space, respectively.
45 use terminal's default colors for the background.
48 redirects input to /dev/null, making it ignore the stop/pause commands.
49 You can still stop it by pressing the interrupt key.
52 makes digits scroll as they change.
53 When running on a fast display, the program breaks up the scrolling into
54 subsecond repaints, making the operation appear smooth.
57 specify starting time (default is ``now'').
59 With an optional numeric argument
64 Normally it runs "forever" (counting down from 2 billion seconds).
66 Amos Shapir, modified for curses by John Lupien.
68 Improvements for ncurses by Thomas Dickey.