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Top Forums Shell Programming and Scripting any explanation for thsi shell script behaviour Post 10150 by doeboy on Thursday 8th of November 2001 01:12:33 PM
Old 11-08-2001
I would have to disagree with that statement that both cases spawn a child shell.

Perderabo is correct.
 

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POSIX_SPAWNATTR_GETPGROUP(3)				   BSD Library Functions Manual 			      POSIX_SPAWNATTR_GETPGROUP(3)

NAME
posix_spawnattr_getpgroup, posix_spawnattr_setpgroup -- get and set the spawn-pgroup attribute of a spawn attributes object LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <spawn.h> int posix_spawnattr_getpgroup(const posix_spawnattr_t *restrict attr, pid_t *restrict pgroup); int posix_spawnattr_setpgroup(posix_spawnattr_t *attr, pid_t pgroup); DESCRIPTION
The posix_spawnattr_getpgroup() function obtains the value of the spawn-pgroup attribute from the attributes object referenced by attr. The posix_spawnattr_setpgroup() function sets the spawn-pgroup attribute in an initialized attributes object referenced by attr. The spawn-pgroup attribute represents the process group to be joined by the new process image in a spawn operation (if POSIX_SPAWN_SETPGROUP is set in the spawn-flags attribute). The default value of this attribute is zero. RETURN VALUES
The posix_spawnattr_getpgroup() and posix_spawnattr_setpgroup() functions return zero. SEE ALSO
posix_spawn(3), posix_spawnattr_destroy(3), posix_spawnattr_init(3), posix_spawnp(3) STANDARDS
The posix_spawnattr_getpgroup() and posix_spawnattr_setpgroup() functions conform to IEEE Std 1003.1-2001 (``POSIX.1''). HISTORY
The posix_spawnattr_getpgroup() and posix_spawnattr_setpgroup() functions first appeared in FreeBSD 8.0. AUTHORS
Ed Schouten <ed@FreeBSD.org> BSD
March 24, 2008 BSD
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