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authorMattias Andrée <maandree@kth.se>2017-10-17 18:24:03 +0200
committerMattias Andrée <maandree@kth.se>2017-10-17 18:24:03 +0200
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-\input texinfo @c -*-texinfo-*-
-
-@c %**start of header
-@setfilename orphan-reaper.info
-@settitle orphan-reaper
-@afourpaper
-@documentencoding UTF-8
-@documentlanguage en
-@finalout
-@c %**end of header
-
-
-@dircategory Miscellaneous
-@direntry
-* orphan-reaper: (orphan-reaper). Place subreapers in your process tree to keep it structured
-@end direntry
-
-
-@copying
-Copyright @copyright{} 2014 Mattias Andrée
-
-@quotation
-Permission is granted to copy, distribute and/or modify this document
-under the terms of the GNU Free Documentation License, Version 1.3 or
-any later version published by the Free Software Foundation; with no
-Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
-Texts. A copy of the license is included in the section entitled
-``GNU Free Documentation License''.
-@end quotation
-@end copying
-
-@ifnottex
-@node Top
-@top orphan-reaper -- Place subreapers in your process tree to keep it structured
-@insertcopying
-@end ifnottex
-
-@titlepage
-@title orphan-reaper
-@subtitle Place subreapers in your process tree to keep it structured
-@author by Mattias Andrée (maandree)
-
-@page
-@c @center `'
-@vskip 0pt plus 1filll
-@insertcopying
-@end titlepage
-
-@contents
-
-
-
-@menu
-* Overview:: Brief overview of @command{orphan-reaper}.
-* Invoking:: Invocation of @command{orphan-reaper}.
-* GNU Free Documentation License:: Copying and sharing this manual.
-@end menu
-
-
-
-@node Overview
-@chapter Overview
-
-This a daemon spawns a process and reaps all orphaned
-grandchildren. This is useful if you want to keep
-your process tree clean. For instance if you want
-all programs started from inside the same display
-server instance to appear to be inside that display
-if you look inside the process tree, rather than all
-processes that loses their parent being reparented
-to PID 1 and make a mess on your process tree.
-
-
-
-@node Invoking
-@chapter Invoking
-
-@command{orphan-reaper} recognises one option:
-
-@table @option
-@item --fatal
-If this option is used, @command{orphan-reaper}
-will return with exit value 2 if it is unable
-to set up a subreaper. If this option is not
-used, @command{orphan-reaper} will proceed to
-start the specified command even if it cannot
-create a subreaper under it.
-@end table
-
-After the optional option you should specify
-a command in the same mannar as you would
-start it normally. If the command starts
-with a dash (-) you must add the argument
-@option{--} before it.
-
-Once @command{orphan-reaper} has configured
-itself to be a subreaper and spawned the
-specified command it will reexecute into
-@command{reapd} (a libexec) to save memory,
-@command{reapd} does nothing at all except
-reaping children (processes that they before
-their parent are automatically reparented
-by the kernel to be a child of @command{reapd}),
-and exit with exit value 0 when it no longer
-have any children (at which point it cannot
-get any new children). It will also print
-exit with exit value 2, after it has printed
-an error message, if it encounters an error.
-
-
-
-@node GNU Free Documentation License
-@appendix GNU Free Documentation License
-@include fdl.texinfo
-
-@bye
-