xphoon(1) User Commands xphoon(1)
NAME
xphoon - displays the PHase of the mOON on the root window
SYNOPSIS
xphoon [
-b] [
-t interval [
-i]] [
-display name]
DESCRIPTION
Xphoon sets the X root window to a picture of the moon in its current
phase, including the partial lighting of the dark side by reflected
earthlight.
OPTIONS
-b Defeats the earthlight feature, forcing the dark side to be
black.
-t Have
xphoon keep running and update the picture every
interval minutes. (Normally,
xphoon just sets the root picture and
exits.)
-i Forks a background process and prints the process-id to
stdout. Useful if you want to make menu commands to refresh
or kill
xphoon.
NOTES
The original motivation for this program was that xsetroot was
too slow. Loading a full-screen bitmap took about 15 seconds. We made a
trivial program that had fullmoon.bitmap compiled in, and it ran in
less than a second. (And incidentally, the executable was smaller
than fullmoon.xbm.) Then later we came up with the phase hacking,
the earthlight, and the auto-scaling.
SEE ALSO
phoon(1),
xsetroot(1)
AUTHORS
Copyright (C) 1988,1991 by Jef Poskanzer <jef@acme.com> and Craig
Leres <leres@ee.lbl.gov>. All rights reserved. The moon-phase
computation is from "moontool.c" by John Walker.
14 September 1991 xphoon(1)
