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Script required to truncate all the lines except a specific snippet.

 
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# 1  
Old 12-05-2010
Script required to truncate all the lines except a specific snippet.
Hi,

I have a file with the following structure.

XXXXX...........
YYYYY...........
.................
..................
ZZZZZZ......
qwerty_start..............
..................
.................
..................
querty_end................
...........................
............................

I need to extract the following snippet and copy to a new file.

qwerty_start..............
..................
.................
..................
querty_end................

qwerty_start and qwerty_end is just an example. i have my own keywords which vary for different files. So both should be given as a variables. (i.e) it will be read as a input while executing the script.

Can somebody please help me on getting this?

Thanks in advance.
# 2  
Old 12-05-2010
Code:
 
awk '/qwerty_start/,/querty_end/' infile > outfile

# 3  
Old 12-05-2010
Great thanks for your reply. It is working fine when hardcoded as
awk '/12345_start/,/12345_end/' test > test1

Tried to pass variable. But still i am not getting the solution.
a=12345_start
b=12345_end
awk '$a,$b' test > test2

Also tried this.

awk '/$a/,/$b/' test > test3
# 4  
Old 12-05-2010
Quote:
Originally Posted by abinash
Great thanks for your reply. It is working fine when hardcoded as
awk '/12345_start/,/12345_end/' test > test1

Tried to pass variable. But still i am not getting the solution.
a=12345_start
b=12345_end
awk '$a,$b' test > test2

Also tried this.

awk '/$a/,/$b/' test > test3
Code:
 
a=12345_start
b=12345_end
awk '/'"$a"'/,/'"$b"'/' in > out

This User Gave Thanks to malcomex999 For This Post:
abinash
 
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