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Print text between delimiters IF it contains a certain term...

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Top Forums Shell Programming and Scripting Print text between delimiters IF it contains a certain term...
# 15  
Old 09-20-2011
So, I'm pleased with how my tool works, however I have more additions I would like to add, namely case insensitivity. So, I essentially have the user search for some term that they would like to see from a large list of stuff similar to below.

Code:
cat textfile.txt

gives

Code:
-------------------------------------
jibberish
-------------------------------------
Accept: */*
Referer: http://www.google.com/
Accept-Language: en-us
User-Agent: Mozilla/4.0
Accept-Encoding: gzip, deflate
Host: www.google.com
Connection: Keep-Alive
-------------------------------------
jibberish
-------------------------------------

Currently I am reading in a user provided variable, and using it to search,
Code:
echo "Enter search term:"
read searchstring
#escaping the appropriate characters
searchstring2=$(echo $searchstring | sed 's/(/\\(/g' | sed 's/)/\\)/g'| sed 's/\//\\\//g')
cat textfile.txt | awk '/'"$searchstring2"'/{print}' RS='------*'

The results for a search for "Referer: http://www.google.com/" provide exactly what I want, which is;

Code:
Accept: */*
Referer: http://www.google.com/
Accept-Language: en-us
User-Agent: Mozilla/4.0
Accept-Encoding: gzip, deflate
Host: www.google.com
Connection: Keep-Alive

However, I would like to also be able to search for something like the following;
Code:
Referer: http://Www.GooGle.com/

and get those same results;
Code:
Accept: */*
Referer: http://www.google.com/
Accept-Language: en-us
User-Agent: Mozilla/4.0
Accept-Encoding: gzip, deflate
Host: www.google.com
Connection: Keep-Alive

Any ideas? I've stepped around IGNORECASE but it doesn't seem right for what I want.

---------- Post updated at 10:57 AM ---------- Previous update was at 09:02 AM ----------

Nevermind, I ended up using ignorecase.

Code:
cat textfile.txt | awk -v IGNORECASE=1 '/'"$searchstring2"'/{print}' RS='------*'
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