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Full Discussion: [Solved] Look for strings and use variables
Top Forums Shell Programming and Scripting [Solved] Look for strings and use variables Post 302564693 by CarloM on Friday 14th of October 2011 10:53:55 AM
Old 10-14-2011
Quote:
Originally Posted by Benou
Also, I have been trying to understand how the nawk command you posted works but it looks like chinese to me. Would you mind giving me a short explanation.
Code:
nawk -F"[\",]" '/MARK/||/GET/ {print $2,$9}' infile | cut -d' ' -f2

Thanks so much.
Ben
nawk -F"[\",]" Use double-quote and comma as (input) field separators. (Line 1 field 1 is now '--MARK--', field 2 is blank, field 3 is 'Thu Oct 13... ' etc).
/MARK/||/GET/ For lines containing MARK or GET...
{print $2,$9} print field 2 and field 9. Note that for some lines these are empty strings.

With some square brackets to (hopefully) make the output a bit clearer, this is what comes out of the (n)awk command:
Code:
# awk -F"[\",]" '/MARK/||/GET/ {printf ("[%s] [%s]\n", $2, $9)}' xx.txt
[] [192.168.230.1]
[GET /Webcam/webcam.html HTTP/1.1] []
[] []
[] [192.168.230.1]
[GET /cgi-bin/camctrl.cgi HTTP/1.1] []
[] []

This is then piped into:
cut -d' ' cut with a field delimiter of space
-f2 and output field 2.
 

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