system man page on Xenix

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SYSTEM(3)							     SYSTEM(3)

NAME
       system - issue a shell command

SYNOPSIS
       #include <stdlib.h>

       system(const char *string);

DESCRIPTION
       System  hands  string  to  the  command interpreter sh(1).  The calling
       process waits until  the	 shell	has  completed,	 ignoring  SIGINT  and
       SIGQUIT, and blocking SIGCHLD.

       If string is a NULL pointer, system will return non-zero if the command
       interpreter sh(1) is available, and zero if it is not.

       System returns the exit status of the shell, or -1 if the  wait(3)  for
       the  shell failed.  A return status of 127 indicates that the execution
       of the shell failed.

SEE ALSO
       sh(1), execve(2), wait(2), popen(3)

STANDARDS
       System conforms to ANSI X3.159-1989 (``ANSI C'').

7th Edition			 May 17, 1990			     SYSTEM(3)
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