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Annotation of 43BSDReno/lib/libc/stdlib/system.3, revision 1.1

1.1     ! root        1: .\" Copyright (c) 1990 The Regents of the University of California.
        !             2: .\" All rights reserved.
        !             3: .\"
        !             4: .\" Redistribution and use in source and binary forms are permitted
        !             5: .\" provided that: (1) source distributions retain this entire copyright
        !             6: .\" notice and comment, and (2) distributions including binaries display
        !             7: .\" the following acknowledgement:  ``This product includes software
        !             8: .\" developed by the University of California, Berkeley and its contributors''
        !             9: .\" in the documentation or other materials provided with the distribution
        !            10: .\" and in all advertising materials mentioning features or use of this
        !            11: .\" software. Neither the name of the University nor the names of its
        !            12: .\" contributors may be used to endorse or promote products derived
        !            13: .\" from this software without specific prior written permission.
        !            14: .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            15: .\" IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            16: .\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            17: .\"
        !            18: .\"    @(#)system.3    6.3 (Berkeley) 5/17/90
        !            19: .\"
        !            20: .TH SYSTEM 3 "May 17, 1990"
        !            21: .AT 3
        !            22: .SH NAME
        !            23: system \- issue a shell command
        !            24: .SH SYNOPSIS
        !            25: .nf
        !            26: .ft B
        !            27: #include <stdlib.h>
        !            28: 
        !            29: system(const char *string);
        !            30: .ft R
        !            31: .fi
        !            32: .SH DESCRIPTION
        !            33: .I System
        !            34: hands
        !            35: .I string
        !            36: to the command interpreter
        !            37: .IR sh (1).
        !            38: The calling process waits until the shell has completed,
        !            39: ignoring SIGINT and SIGQUIT, and blocking SIGCHLD.
        !            40: .PP
        !            41: If
        !            42: .I string
        !            43: is a NULL pointer,
        !            44: .I system
        !            45: will return non-zero if the command interpreter
        !            46: .IR sh (1)
        !            47: is available, and zero if it is not.
        !            48: .PP
        !            49: .I System
        !            50: returns the exit status of the shell, or \-1 if the
        !            51: .IR wait (3)
        !            52: for the shell failed.
        !            53: A return status of 127 indicates that the execution of the shell
        !            54: failed.
        !            55: .SH "SEE ALSO"
        !            56: sh(1), execve(2), wait(2), popen(3)
        !            57: .SH STANDARDS
        !            58: .B System
        !            59: conforms to ANSI X3.159-1989 (``ANSI C'').

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