Re: command output to variables

"Michele Mondelli" <[email protected]> Wed, 7 Jan 2009 14:33:46 +0100

Newsgroups	org.kernel.vger.linux-c-programming
Message-ID	<[email protected]>

A simple example of using pipe in Linux.

Regards


--
Homepage: http://www.mithenks.com
Slackware GNU/Linux User since 2003
Registered Linux User #383379
Registered Linux Machine #391361

pipe.c (text/x-csrc, 439 B)

/*
 * Run the 'ls' command and print the output to stdout.
 * 
 * Compile with 
 * 		gcc -Wall pipe.c -o pipe
 * 
 * 
 * Mithenks <[email protected]>
 * 
 */
#include <stdio.h>
#include <stdlib.h>

int main() {
	
	FILE *pipe;
	char buffer[1024];
	
	if ( (pipe = popen("ls","r") ) < 0 ) {
		perror("popen(): ");
		exit(-1);
	}
	
	
	fread(buffer,sizeof(buffer),1,pipe);
	printf("Output:\n%s\n",buffer);
	
	pclose(pipe);
	
	return 0;
}