Read Value from shell command Linux

Question

Is there a easier way to read the output of a Linux Shell Command like

ifconfig | grep "inet Adresse" | grep -v 127.0.0.1 | awk '{print $2}' | awk -F":" '{print $2}'

than using popen()

fp = popen(command, "r");

while(fgets(line, PATH_MAX, fp)!=NULL)
{
      //someoperations
}

pclose(fp);

I need to get my info twice before and after some operations.

As my output is just one Line ?

`popen` is simple, or Glib's `g_spawn_sync()` http://stackoverflow.com/questions/219138/get-command-output-in-pipe-c-for-linux , http://stackoverflow.com/questions/43116/how-can-i-run-an-external-program-from-c-and-parse-its-output — pce, Nov 22 '12 at 12:59
This sounds like an [X-Y Problem](http://meta.stackexchange.com/questions/66377/what-is-the-xy-problem). Is the question you meant to ask more like _"How can I get the external IP addresses of my computer using C++?"_ — Rook, Nov 22 '12 at 13:10

score 0 · Accepted Answer · answered Nov 22 '12 at 14:33

0

I have used popen() now, was the easiest way Thank you @pce

fp = popen(fullCommand, "r");
while(fgets(line, PATH_MAX, fp) != NULL);
pclose(fp);

line was type of

char line[PATH_MAX];

Thank all of you.

answered Nov 22 '12 at 14:33

r4d1um

1 Answers1