[SOLVED] Problem with grep

maobin · 02-24-2011, 02:44 AM

Hi,
I wan to extract some information from ifconfig,

eg:
inet addr:123.123.123.123 Bcast:123.123.123.255 Mask:255.255.254.0

i wan to extract the mask value, how can i do that?
I've tried using

Code:

grep -o "Mask:*" test1.txt

but it only outputs "Mask:" I need to get 255.255.254.0

Any idea how should can I do it?

druuna · 02-24-2011, 02:57 AM

Hi,

Code:

/sbin/ifconfig | grep -o "Mask:.*"

Hope this helps.

JimmyKrak · 02-24-2011, 03:00 AM

Take a look at "cut"

example: ifconfig|grep "Mask"|cut -d":" -f4

maobin · 02-24-2011, 03:07 AM

Quote:

Originally Posted by druuna

Hi,

Code:

/sbin/ifconfig | grep -o "Mask:.*"

Hope this helps.

oh.. i miss out the . haha.. thanks alot