[SOLVED] Is there a way to parse console notices from a command as output?

abefroman · 03-24-2016, 03:26 PM

Is there a way to parse console notices from a command as output?

IE. to grep the output of ipcalc for bad, bad prints, but as you can see from wc -l, its not actually returning anything:

Code:

# ipcalc -c 192.168.0.h1 |grep bad |wc -l
ipcalc: bad IPv4 address: 192.168.0.h1
0

TIA

grail · 03-24-2016, 03:46 PM

Try checking whether the data is going to stdout or stderr??

suicidaleggroll · 03-24-2016, 03:56 PM

The error output is going to stderr.

If you want to merge stderr into stdout, you can use "2>&1", eg;

Code:

ipcalc -c 192.168.0.h1 2>&1 | grep bad | wc -l

abefroman · 03-24-2016, 03:56 PM

Quote:

Originally Posted by grail

Try checking whether the data is going to stdout or stderr??

It must be going to stderr, is there a way to get it to stdout? 3&>1 or something?

abefroman · 03-24-2016, 03:57 PM

Quote:

Originally Posted by suicidaleggroll

The error output is going to stderr.

If you want to merge stderr into stdout, you can use "2>&1", eg;

Code:

ipcalc -c 192.168.0.h1 2>&1 | grep bad | wc -l

Thanks, I was close, lol.