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Full Discussion: Making a system call
Top Forums Programming Making a system call Post 302078984 by blowtorch on Thursday 6th of July 2006 06:25:21 AM
Old 07-06-2006
reborg is right. Using system will not help if you are going to do it that way.

Understand that system() actually forks and execs whatever command you have given. So your export command would be executed in a child process of the current running process and the environment variables would be set in the child process. When the system() call completes, the child process would end and its environment will not be visible to any further child processes that the main parent process may have. If you want to execute the script through a C program, you have to run it as:
Code:
#include<stdlib.h>
int main() {
   system("full_path_to_script");
}

 

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LEARN ABOUT DEBIAN

purity-ng

PURITY-NG(6)							   Games Manual 						      PURITY-NG(6)

NAME

       purity-ng - general purpose purity testing software

SYNOPSIS

       purity-ng [OPTION]...  list|FILE|TESTNAME

DESCRIPTION

       Purity  is  an  interactive purity test program with a simple, user interface and datafile format.  For each test, questions are printed to
       the your terminal, and you are prompted for an answer to the current question.  At a prompt, these are your choices:

	      y      Answer "yes" to the question.
	      n      Answer "no" to the question.
	      b      Backup  one  question, if you answered it incorrectly, or someone is watching you take the test, and you don't (or do) want to admit a different answer.
	      s      Print your current score on the test you are taking.
	      q      Quit the test, and print the current score.
	      ?      Print a help screen for the current prompt.

       At the end of the test, your score is printed out.  For most purity tests, lower scores denote more "experience" of the test material.

OPTIONS

       --version
	      print current version of purity-ng

       -h, --help
	      show the help message and exit

       -p     print the test without prompting for answers.

       -r     decrypt the test using the Rot 13 algorithm.

       To get a list of all purity tests available globally on your system, run purity-ng list.

AUTHORS

       purity was originally written by Eric Lechner in 1989.  purity-ng is a reimplementation of purity in Python for modern systems, written	by
       Simon Fondrie-Teitler and Luke Faraone.

       This manual page was written by Luke Faraone.

BUGS

       If you find bugs in the application, please report these to <https://bugs.launchpad.net/purity-ng> or to your distribution's distributor.

SEE ALSO

       purity(6)

       Running purity-ng format provides documentation about the datafile format.

       Additional documentation is available online at <http://packages.python.org/purity-ng>.

								  January 7, 2011						      PURITY-NG(6)
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