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Full Discussion: How to extract duplicate records with associated header record
Top Forums UNIX for Dummies Questions & Answers How to extract duplicate records with associated header record Post 302102755 by run_eim on Friday 12th of January 2007 12:51:10 PM
Old 01-12-2007
How to extract duplicate records with associated header record
All,

I have a task to search through several hundred files and extract duplicate detail records and keep them grouped with their header record. If no duplicate detail record exists, don't pull the header. For example, an input file could look like this:

input.txt
HA
D1
D2
D2
D3
D4
D4
HB
D1
D2
HC
D1
D1
D2
D3
D3

The output would be:

output.txt
HA
D2
D4
HC
D1
D3

Would it be possible to do this with AWK? I do not know python.

Thank you for your time.
 

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LEARN ABOUT SUSE

ragator

RAGATOR(1)						      General Commands Manual							RAGATOR(1)

NAME

       ragator - aggregate argus(8) data file entries.

COPYRIGHT

       Copyright (c) 2000-2003 QoSient. All rights reserved.

SYNOPSIS

       ragator [-f ragator.conf] [raoptions]

DESCRIPTION

       Ragator	reads argus(8) data from an argus-file, and merges matching argus flow activity records together.  In its default mode of options,
       this effectively converts argus(8) files from detail to non-detail mode, and merges periodic flow report records to a single argus  record,
       thus compressing the argus(8) file to a reduced size.

       You can modify the aggregation strategy used by ragator to merge records together, by using the -f ragator.conf option.	See ragator(5) for
       a complete description of the format and syntax of the flow model file.

OPTIONS

       Ragator, like all ra based clients, supports a number of ra options including filtering of input argus records through a terminating filter
       expression.  See ra(1) for a complete description of ra options.

AUTHORS

       Carter Bullard (carter@qosient.com).

SEE ALSO

       ragator(5) ra(1), rarc(5), argus(8) tcpdump(1),

								   21 July 1995 							RAGATOR(1)
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