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Full Discussion: zombie program
Top Forums UNIX for Dummies Questions & Answers zombie program Post 31336 by Perderabo on Wednesday 6th of November 2002 08:27:56 AM
Old 11-06-2002
A zombie is a program that has completely exited. It is waiting for it's parent process to issue a wait() system call. When you see a zombie in "ps", look at the ppid field. That is the pid of the parent. If you kill the parent, the zombies will become inherited by init which will notice and issue that wait() call. This makes the zombies go away. You really should track down the author of that parent process. This is a bug and it should be fixed. Programs that launch child processes need to be ready for the death of a child.

My knowledge of windows is very weak, but I think a "not responding" program is more like a unix program that is ignoring as many signals as possible. If you do a "kill $pid" on it, it won't go away. You need to do a "kill -9 $pid" on it to get rid of it.

A port cannot be a zombie, so I don't know what you have in mind there.
 

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LEARN ABOUT REDHAT

ppmqvga

PPMQVGA(1)						      General Commands Manual							PPMQVGA(1)

NAME

       ppmqvga - 8 plane quantization

SYNOPSIS

       ppmqvga [ options ] [ input file ]

DESCRIPTION

       ppmqvga	quantizes  PPM	files  to 8 planes, with optional Floyd-Steinberg dithering.  Input is a PPM file from the file named, or standard
       input of no file is provided.

   Options
       -d dither. Apply Floyd-Steinberg dithering to the data

       -q quiet. Produces no progress reporting, and no terminal output unless and error occurs.

       -v verbose. Produces additional output describing the number of colors found, and  some	information  on  the  resulting  mapping.  May	be
       repeated to generate loads of internal table output, but generally only useful once.

EXAMPLES

       ppmqvga -d my_image.ppm | ppmtogif >my_image.gif

       tgatoppm zombie.tga | ppmqvga | ppmtotif > zombie.tif

SEE ALSO

       ppmquant

DIAGNOSTICS

       Error messages if problems, various levels of optional progress reporting.

LIMITATIONS

       none known.

AUTHOR

       Original  by  Lyle  Rains  (lrains@netcom.com)  as  ppmq256  and  ppmq256fs  combined,  documented,  and  enhanced by Bill Davidsen (david-
       sen@crd.ge.com)

Copyright
       Copyright 1991,1992 by Bill Davidsen, all rights reserved.  The program and documentation may be freely distributed by anyone in source	or
       binary format. Please clearly note any changes.

								       local								PPMQVGA(1)
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