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       webcollage - decorate the screen with random images from the web

       webcollage [-display host:display.screen] [-root] [-verbose] [-timeout secs] [-delay secs]
       [-background bg] [-no-output] [-urls-only] [-size WxH] [-filter	command]  [-filter2  com-
       mand] [-http-proxy host[:port]] [-dictionary dictionary-file] [-driftnet [cmd]]

       The  webcollage	program pulls random image off of the World Wide Web and scatters them on
       the root window.  One satisfied customer described it as "a  nonstop  pop  culture  brain-
       bath."	This program finds its images by doing random web searches, and extracting images
       from the returned  pages.   It  places  the  images  on	the  root  window  by  using  the
       giftopnm(1), djpeg(1), and xli(1), xv(1), or xloadimage(1) tools.

       webcollage is written in perl(1) and requires Perl 5.

       It  will  be  an  order of magnitude faster if you also have the webcollage-helper program
       installed (a GDK/JPEG image compositor), but webcollage works without it as well.

       webcollage can be used in conjunction with the driftnet(1) program (the Unix equivalent of
       EtherPEG)  to  snoop  images  from traffic on your local subnet, instead of getting images
       from search engines.

       webcollage accepts the following options:

       -root   Draw on the root window.  This option is manditory, if output is  being	produced:
	       drawing to a window other than the root window is not yet supported.

       -verbose or -v
	       Print  diagnostics to stderr.  Multiple -v switches increase the amount of output.
	       -v will print out the URLs of the images, and where they  were  placed;	-vv  will
	       print  out any warnings, and all URLs being loaded; -vvv will print information on
	       what URLs were rejected; and so on.

       -timeout seconds
	       How long to wait for a URL to complete before giving up on it and moving on to the
	       next one.  Default 30 seconds.

       -delay seconds
	       How long to sleep between images.  Default 2 seconds.  (Remember that this program
	       probably spends a lot of time waiting for the network.)

       -background color-or-ppm
	       What to use for the background onto which images are pasted.  This may be a  color
	       name,  a hexadecimal RGB specification in the form '#rrggbb', or the name of a PPM

       -size WxH
	       Normally, the output image will be made to be the size of the screen.   This  lets
	       you specify the desired size.

	       If  this  option  is  specified, then no composite output image will be generated.
	       This is only useful when used in conjunction with -verbose.

	       If this option is specified, then no composite output  image  will  be  generated:
	       instead, a list of image URLs will be printed on stdout.

       -filter command
	       Filter  all  source images through this command.  The command must take a PPM file
	       on stdin, and write a new PPM file to stdout.  One good choice for a filter  would
	       webcollage -root -filter 'vidwhacker -stdin -stdout'

       -filter2 command
	       Filter  the  composite  image through this command.  The -filter option applies to
	       the sub-images; the -filter2 applies to the final, full-screen image.

       -http-proxy host:port
	       If you must go through a proxy to connect to the web, you can specify it with this
	       option, or with the $http_proxy or $HTTP_PROXY environment variables.

       -dictionary file
	       Webcollage normally looks at the system's default spell-check dictionary to gener-
	       ate words to feed into the search engines.  You can specify an  alternate  dictio-
	       nary with this option.

       -driftnet [ args ]
	       driftnet(1)  is	a  program  that snoops your local ethernet for packets that look
	       like they might be image files.	It can be used in conjunction with webcollage  to
	       generate a collage of what other people on your network are looking at, instead of
	       a search-engine collage.  If you have driftnet installed on your $PATH,	just  use
	       the -driftnet option.  You can also specify the location of the program like this:
	       -driftnet /path/to/driftnet
	       or, you can provide extra arguments like this:
	       -driftnet '/path/to/driftnet -extra -args'
	       Driftnet  version  0.1.5  or  later  is	required.  Note that the driftnet program
	       requires root access, so you'll have to make driftnet be setuid-root for  this  to
	       work.  Please exercise caution.

       DISPLAY to get the default host and display number.

	       to  get	the name of a resource file that overrides the global resources stored in
	       the RESOURCE_MANAGER property.

       http_proxy or HTTP_PROXY
	       to get the default HTTP proxy host and port.

       /usr/dict/words, /usr/share/lib/dict/words, or /usr/share/dict/words to	find  the  random
       words to feed to search engines.

       http://image.altavista.com/, http://images.google.com/, http://news.yahoo.com/ http://ran-
       dom.yahoo.com/bin/ryl, and http://lycospro.lycos.com/, to find random web pages.

       When drawing on the root window, it always uses the default colormap.  This is actually	a
       limitation  of  xv.  But regardless, when using this program with xscreensaver, it must be
       given the  default-n  visual  specification  (see  the  xscreensaver(1)	manual	for  more

       Animating GIFs are not supported: only the first frame will be used.

       Too  many of the images that it finds are text, not pictures.  This is because most of the
       web is pictures of text.  Which is pretty sad.

       The  latest  version  of  webcollage  can  be  found  as  a  part  of   xscreensaver,   at
       http://www.jwz.org/xscreensaver/,  or on the WebCollage page at http://www.jwz.org/webcol-

       DriftNet: http://www.ex-parrot.com/~chris/driftnet/

       X(1), xscreensaver(1), xli(1), xv(1), xloadimage(1), ppmmake(1), giftopnm(1), pnmpaste(1),
       pnmscale(1),  djpeg(1), cjpeg(1), xdpyinfo(1), perl(1), vidwhacker(1), dadadodo(1), drift-
       net(1) EtherPEG, EtherPeek

       Copyright (C) 1998-2002 by Jamie Zawinski.  Permission to use, copy,  modify,  distribute,
       and  sell  this	software  and its documentation for any purpose is hereby granted without
       fee, provided that the above copyright notice appear in all  copies  and  that  both  that
       copyright notice and this permission notice appear in supporting documentation.	No repre-
       sentations are made about the suitability of this software for any purpose.   It  is  pro-
       vided "as is" without express or implied warranty.

       Jamie Zawinski <jwz@jwz.org>, 24-May-98.

X Version 11				    17-Jun-99				  XScreenSaver(1)
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