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Print Lines between two regexes

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# 1  
Old 01-10-2012
Print Lines between two regexes
Hi I have a file like this

Quote:
SQ kkk m99029 wwwAV
qqqq aaaa 111
sssss qqq 222
ffff gggg 22254
//
AS
DS
SQ ooo l9909 qqqqa
aaa ssss 333
222 aaas hhh
//
I need to delete all the lines between SQ and // and not the lines containing them.

So the desired output should be

Quote:
SQ kkk m99029 wwwAV
//
AS
DS
SQooo l9909 qqqqa
//
I tried by using flip-flop operator
Code:
perl -wlne 'print if !(/SQ/../\/\//)'

But its not printing the lines containing regexes.

Thanks in advanceSmilie
# 2  
Old 01-10-2012
Hi polsum,

Try (using flip-flop in perl):
Code:
$ perl -wlne 'if ( $c = (m|SQ|..m|//|) ) { next unless $c == 1 || $c =~ m/E0$/ } print' infile
SQ kkk m99029 wwwAV
//
AS
DS
SQ ooo l9909 qqqqa
//

Regards,
Birei
This User Gave Thanks to birei For This Post:
polsum
# 3  
Old 01-10-2012
another way using awk:

Code:
awk '/SQ/ { P=1; print }; /\/\// { P=0; print }; !P' filename

This User Gave Thanks to Corona688 For This Post:
polsum
# 4  
Old 01-11-2012
Thank you very much guys. Both are working great.
# 5  
Old 01-11-2012
Quote:
Originally Posted by Corona688
another way using awk:

Code:
awk '/SQ/ { P=1; print }; /\/\// { P=0; print }; !P' filename


I think the second print is an extra one see o/p below , you need to remove it.

o/p
Code:
SQ kkk m99029 wwwAV
//
//
AS
DS
SQ ooo l9909 qqqqa
//
//

Code:
nawk '/SQ/ { P=1;print}; /\/\// { P=0}; !P' filename

o/p:
Code:
SQ kkk m99029 wwwAV
//
AS
DS
SQ ooo l9909 qqqqa
//

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