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Find and select complete paragraph

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# 1  
Old 12-07-2015
Find and select complete paragraph
HI Friends,
I need your help once again.

I have following

Code:
$cat april_2015.txt
== :: ==
Gender: Female
Service: Tattoo
Nature: Permanent
Amt: 21000 INR
Date: 04/04/2015
Artist: Anushka
== :: ==
Gender: Female
Service: Makeup
Nature: Bridal
Amt: 19200 INR
Date: 05/04/2015
Artist: Jenn
== :: ==
Gender: Male
Service: Tattoo
Nature: Permanent
Amt: 9500 INR
Date: 05/04/2015
Artist: Anushka
== :: ==
$
$

I want to grep "Permanent" in such a way that It will select it as follows.

Code:
== :: ==
Gender: Female
Service: Tattoo
Nature: Permanent
Amt: 21000 INR
Date: 04/04/2015
Artist: Anushka
== :: ==
Gender: Male
Service: Tattoo
Nature: Permanent
Amt: 9500 INR
Date: 05/04/2015
Artist: Anushka
== :: ==


Kindly suggest.
Anu...
Last edited by Don Cragun; 12-07-2015 at 04:50 AM.. Reason: Add CODE tags again.
# 2  
Old 12-07-2015
Hi Anu,
Moderator's Comments:
Mod Comment To keep the forums high quality for all users, please take the time to format your posts correctly.

First of all, use Code Tags when you post any code or data samples so others can easily read your code. You can easily do this by highlighting your code and then clicking on the # in the editing menu. (You can also type code tags [code] and [/code] by hand.)



Continuing to ignore requests to properly format your posts may lead to suspension of your account.


What have your tried to solved this problem?
# 3  
Old 12-07-2015
THank you for the suggestion.

I can not think of any solution for this selection criteria.
Kindly help.
# 4  
Old 12-07-2015
Given that you have asked us for help 61 times before with some of your problems being very similar to this one, it is disappointing that you are unable to guess that awk would be a good way to solve a problem like this and show us a start to a solution to this on your own.

You might try something like:
Code:
awk '
$0 == "== :: ==" {
	if(perm) {
		if(!pc++)
			print
		for(i = 1; i <= lc; i++)
			print l[i]
		print
		perm = 0
	}
	lc = 0
	next
}
{	l[++lc] = $0
	if($0 == "Nature: Permanent")
		perm = 1
}' april_2015.txt

As always, if you want to try this on a Solaris/SunOS system, change awk to /usr/xpg4/bin/awk or nawk.
# 5  
Old 12-07-2015
This might not work on all awk versions:
Code:
awk '/Nat.*ermanent/ || NR==1; END {printf "\n"}' RS="== :: ==" ORS="== :: ==" file
== :: ==
Gender: Female
Service: Tattoo
Nature: Permanent
Amt: 21000 INR
Date: 04/04/2015
Artist: Anushka
== :: ==
Gender: Male
Service: Tattoo
Nature: Permanent
Amt: 9500 INR
Date: 05/04/2015
Artist: Anushka
== :: ==

This User Gave Thanks to RudiC For This Post:
Don Cragun
# 6  
Old 12-07-2015
Quote:
Originally Posted by RudiC
This might not work on all awk versions:
Code:
awk '/Nat.*ermanent/ || NR==1; END {printf "\n"}' RS="== :: ==" ORS="== :: ==" file
...

On systems where it does work, this is a great solution. It doesn't work on all systems, and the standards state that the behavior is unspecified if RS is set to a string containing more than one character.

The standard doesn't place any limits like that on ORS; only on RS.
# 7  
Old 12-07-2015
Hi, just for fun, with grep (gnu version 2.16 or higher):
Code:
grep -Pzo '(?s)== :: ==(\n*[^=]\N)*Permanent(\n[^=]\N*)*|== :: ==(?=[\n]$)' file

Regards.
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