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Full Discussion: Finding a match and deleting the line above to it..
Top Forums Shell Programming and Scripting Finding a match and deleting the line above to it.. Post 302743689 by raosr020 on Thursday 13th of December 2012 10:51:30 AM
Old 12-13-2012
Hi Pamu,

Thanks for the reply!!

But with that code any other revoke connect lines also getting deleted (ex: revoke connect from CALU is also getting deleted).

My original file:

Code:
Sun is Hot
Moon is cool
;

-- Mon Sep 10 08:54:10 CDT 2012
-- Mon Sep 11 08:54:10 CDT 2012
-- Mon Sep 12 08:54:10 CDT 2012
revoke connect from SREE;
delete from = 'SREE';
grant connect to SREE with 'fastcar8';
 
-- Mon Sep 12 08:54:10 CDT 2011
revoke connect from CALU;
delete from = 'CALU';
grant connect to CALU with 'calendar';

After running the below command:
Code:
awk '{if($0 ~ /^--/){A[++a]=$0}else if(a && $0 !~ /revoke connect from SREE/){for(i=1;i<=a;i++){print A[a]};a=0}else{print ;a=0}}' file

Output is as follows:
Code:
Sun is Hot
Moon is cool
;

revoke connect from SREE;
delete from = 'SREE';
grant connect to SREE with 'fastcar8';
 
-- Mon Sep 12 08:54:10 CDT 2011
delete from = 'CALU';
grant connect to CALU with 'calendar';

In above ouput
Code:
revoke connect from CALU;

line is missing. That shouldn't happen. Please correct the code.


And i cann't redirect this output to a temporary file. These changes should happen to the original file itself.

Please help me in getting these two requirements solved.

Thanks,
Sreenivas

---------- Post updated at 09:21 PM ---------- Previous update was at 06:50 PM ----------

Hi Scrutinizer

Thanks for the reply!!

Your code is not working. Please suggest me the solution based on the above requirement.

Thanks,
Sreenivas
Last edited by raosr020; 12-13-2012 at 11:46 AM.. Reason: changes made
 

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LEARN ABOUT CENTOS

dnssec-revoke

DNSSEC-REVOKE(8)						       BIND9							  DNSSEC-REVOKE(8)

NAME

       dnssec-revoke - Set the REVOKED bit on a DNSSEC key

SYNOPSIS

       dnssec-revoke [-hr] [-v level] [-K directory] [-E engine] [-f] [-R] {keyfile}

DESCRIPTION

       dnssec-revoke reads a DNSSEC key file, sets the REVOKED bit on the key as defined in RFC 5011, and creates a new pair of key files
       containing the now-revoked key.

OPTIONS

       -h
	   Emit usage message and exit.

       -K directory
	   Sets the directory in which the key files are to reside.

       -r
	   After writing the new keyset files remove the original keyset files.

       -v level
	   Sets the debugging level.

       -E engine
	   Use the given OpenSSL engine. When compiled with PKCS#11 support it defaults to pkcs11; the empty name resets it to no engine.

       -f
	   Force overwrite: Causes dnssec-revoke to write the new key pair even if a file already exists matching the algorithm and key ID of the
	   revoked key.

       -R
	   Print the key tag of the key with the REVOKE bit set but do not revoke the key.

SEE ALSO

       dnssec-keygen(8), BIND 9 Administrator Reference Manual, RFC 5011.

AUTHOR

       Internet Systems Consortium

COPYRIGHT

       Copyright (C) 2009, 2011 Internet Systems Consortium, Inc. ("ISC")

BIND9								   June 1, 2009 						  DNSSEC-REVOKE(8)
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