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Old 02-24-2011, 02:44 AM   #1
maobin
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Registered: Feb 2011
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Problem with grep


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?
 
Old 02-24-2011, 02:57 AM   #2
druuna
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Hi,
Code:
/sbin/ifconfig | grep -o "Mask:.*"
Hope this helps.
 
Old 02-24-2011, 03:00 AM   #3
JimmyKrak
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Take a look at "cut"

example: ifconfig|grep "Mask"|cut -d":" -f4
 
Old 02-24-2011, 03:07 AM   #4
maobin
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Quote:
Originally Posted by druuna View Post
Hi,
Code:
/sbin/ifconfig | grep -o "Mask:.*"
Hope this helps.
oh.. i miss out the . haha.. thanks alot
 
  


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