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05-12-2008
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How do I get system answer in c
How do I get the answer of a system call that is printed in the terminal?
for example: I execute system("pwd"); and get the answer /home/user/ But because I need to send this result to somewhere, I need to store it in a string. Thanks in advance. 
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05-12-2008
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Instead of what?
I do not create or open a file. All I need is to get the answer of any command from the command line into a string, "pwd" is just an example. Can you please give a simple example? Situation: I have char command[50] = "ls"; system(command); // executes the string ___________________? Last edited by eldaran; 05-12-2008 at 05:27 PM.
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05-12-2008
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you can use popen following way:
Code:
#include <stdio.h>
int main()
{
#define BUFSIZE 1024
char buf[1024];
FILE *fp = NULL;
char *cmd = "ls -al /home/";
int nbytes = 0;
int fbytes = BUFSIZE;
int ch =0;
fp = popen(cmd, "r");
if (fp == NULL) {
printf("unable to open %s", cmd);
exit(0);
}
while (nbytes < fbytes && (ch = fgetc(fp)) != EOF)
buf[nbytes++] = ch;
buf[nbytes] = 0;
pclose(fp);
printf("output for %s %d:\n %s", cmd , nbytes, buf);
return 0;
}
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05-13-2008
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netstat, ifconfig are not in your PATH. Try with providing full path or Might be you need supreuser permissions.
First try these commands on your promopt/shell.
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