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Top Forums Programming Question About Multi-Processed Applications... fork() Post 302259940 by Corona688 on Wednesday 19th of November 2008 09:40:35 AM
Old 11-19-2008
If you open two browsers, they'd be two children of the same parent, not one as the parent of the other.

There's also more layers than init -> user application -> children, though that's enough for examples. Init creates the window server which creates the login manager which creates everything you run; or for a shell, init creates the login shell which creates your processes.
 

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INIT(8) 						      System Manager's Manual							   INIT(8)

NAME
init - initialize machine upon booting SYNOPSIS
/$cputype/init [ -ctm ] [ command ... ] DESCRIPTION
Init initializes the machine: it establishes the name space (see namespace(4) and newns in auth(2)), and environment (see env(3)) and starts a shell (rc(1)) on the console. If a command is supplied, that is run instead of the shell. On a CPU server the invoked shell runs cpurc(8) before accepting commands on the console; on a terminal, it runs termrc and then the user's profile. Options -t (terminal) and -c (CPU) force the behavior to correspond to the specified service class. Otherwise init uses the value of the environment variable $service to decide the service class. Init sets environment variables $service (either to the incoming value or according to -t or -c), $objtype (to the value of $cputype), $user (to the contents of #c/user), and $timezone (to the contents of /adm/timezone/local). With option -m init starts only an interactive shell regardless of the command or service class. On a CPU server, init requires the machine's password to be supplied before starting rc on the console. Init is invoked by boot(8), which sets the arguments as appropriate. SOURCE
/sys/src/cmd/init.c SEE ALSO
rc(1), auth(2), boot(8) INIT(8)
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