Printing system call output using printf...

[GooMooPunch]

I'm quite new to the C language, and i'm sure this is a simple question...

I'm trying to create a prompt that includes the output from the command uname(), but I'm having trouble displaying it properly.

My question is how do I capture the output of the uname() command so I can include it in a printf line?

 

[Salem]

Instead of using the uname command, use the uname function instead

#include <sys/utsname.h>
int uname(struct utsname *buf);

--

 

[GooMooPunch]

Thank you for the reply Salem,

Follow up question:

How can I capture the string data from calling the uname() function? It returns an integer, so I'm not quite sure how to do this...

Thanks

 

[itsgsd]

The string data is in the utsname struct that is passed to the function as in the following code:

#include <stdio.h>
#include <sys/utsname.h>

int main() {

  struct utsname name;

  uname(&name);
  printf(&quot;sysname: %s\n&quot;,name.sysname);
  printf(&quot;nodename: %s\n&quot;,name.nodename);
  printf(&quot;release: %s\n&quot;,name.release);
  printf(&quot;version: %s\n&quot;,name.version);
  printf(&quot;machine: %s\n&quot;,name.machine);

}

Hope this helps.