NetNews Offline 2/NetNews Offline Volume 2.iso/news/comp/lang/c-part1/223

Text File | 1996-08-05 | 1.6 KB | 58 lines

Newsgroups: comp.lang.c
Path: newshub.ariel.cs.yorku.ca!cs911319
From: [e-mail] (STEPHEN HOI CHI KONG)
Subject: Re: SYSTEM CALL RESULT
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Message-ID: <[e-mail]>
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Organization: York University, Dept. of Computer Science
References: <4cbn2i$[e-mail]> <[e-mail]>
Date: Wed, 3 Jan 1996 12:53:33 GMT

In article <[e-mail]> [e-mail] writes:
>In article <4cbn2i$[e-mail]>
>           [e-mail] "A.Labed" writes:
>
>>
>>Hi,
>>
>>Is there a way to get the result of a
>>system call within a C program.
>>example :
>
>
>The exit value of a process is returned by the system call. Therefore
>if you wrote a small script which computed the line count of the
>current list of processes and then exited with this value you could
>pick it up as the return value of the system call.
>
>
>
>            - Chris
>
>-============================================================================-
>IntelliCorp Applications Consultant / E-mail: [e-mail]
>LiveModel and PowerModel are part   / CServe: 100255,701
>of IntelliCorp's MODELWORKS        / Tel   : [phone]
>application development suite.      / Fax   : [phone]
>-============================================================================-

    I believe you have a more direct approach.
try
%man popen

    This system call redirect all stdout from external command into
user buffer (char buf[]). Good Luck.

                        Zollen