use of variables in awk to search for pattern from a file


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# 1  
use of variables in awk to search for pattern from a file

Hi,

I need to extract all the content between two strings stored in two variables "startstring" and "endstring"
Code:
startstring=hello
enstring=world
#notworking
awk '/$startstring/, $NF ~ /$endstring/ ' file > file2

The above code is not working with variables. It works when actual string values are used as patterns as below.
Code:
#workingcode
awk '/hello/, $NF ~ /world/ ' file > file2


Can someone help me to use these two variables in awk for searching the patterns.

Thanks.

Thanks & Regards,
Jean
Moderator's Comments:
Mod Comment Please use code tags!

Last edited by vbe; 11-24-2011 at 05:49 AM..
# 2  
try this ..
Code:
$ v1=hello
$ v2=world
$ nawk "/$v1/,/$v2/" infile
hello
line1
line2
world
$

This User Gave Thanks to jayan_jay For This Post:
# 3  
Thanks mate, i never knew an apostrophe would change my life altogether Smilie
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