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Thread: Using grep to extract line number
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Old 03-19-2005
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reborg reborg is offline Forum Staff  
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Join Date: Mar 2005
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Quote:
Originally Posted by mskarica
I'm trying to use grep to get the line number only. This is the command I'm using:
grep -n "Content-Disposition: attachment" mbox

The output I get is:
45:Content-Disposition: attachment; filename="test.txt"

So now I just want to get the line number (45) from this output.

Can someone help me with this? Thanks
Code:

grep -n "Content-Disposition: attachment" mbox | sed -n 's/^\([0-9]*\)[:].*/\1/p'