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Full Discussion: awk compare files
Top Forums Shell Programming and Scripting awk compare files Post 302932431 by rakesh_411 on Wednesday 21st of January 2015 01:17:09 PM
Old 01-21-2015
I am sorry for not stating my requirement properly , We are trying to accomplish incremental load of data by comparing two files

File 1
Code:
 id   | text       | email id 
---------------------------------
89564|this is line 1 | xyz@sample.txt
985384|this is line 14 | abc@sample.txt
657342|this is line 3 | def@sample.txt

File 2

Code:
 id   | text       | email id 
---------------------------------
89564|this is line 1 | xyz@sample.txt
985384|this is line 2 | abc@sample.txt


I would like output by comparing above two files which should display below results
Desired Output:
-------------------
Code:
 id   | text       | email id 
---------------------------------
89564|this is line 1 | xyz@sample.txt
985384|this is line 2 | abc@sample.txt | modified (Note :  second column got modified ) 
657342|this is line 3 | def@sample.txt | deleted

Here we are trying to compare two files and if we don't find a record in file 2 based on column 1 ( primary key ) we treat that entry as deleted and we generate a new file with its operational code(in this case deleted). Similarly we if we find record in both the files ( file 1 and file2) we would still have that record in file 3 ,and for modified if we see any column modifies in file 2 we add the entry as modified .
Last edited by Don Cragun; 01-21-2015 at 04:02 PM.. Reason: Add CODE tags.
 

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dep3changelog

DEP3CHANGELOG(1)                                              General Commands Manual                                             DEP3CHANGELOG(1)

NAME

       dep3changelog - generate a changelog entry from a DEP3-style patch header

SYNOPSIS

       dep3changelog patch [patch ...] [options] [-- [dch_options]]

DESCRIPTION

       dep3changelog  extracts the DEP3 patch headers from the given patch files and builds a changelog entry for each patch.  If the patch author
       differs from the one detected from the DEBEMAIL, NAME, DEBEMAIL, or EMAIL environment variables, "Thanks to author <email>" is added to the
       changelog entry for that patch.  Any bug-debian or bug-ubuntu fields are added as "Closes" to the changelog entry.  The generated changelog
       entries are passed to debchange as an argument along with the given dch_options.

OPTIONS

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              Display a help message and exit successfully.

       --version
              Display version and copyright information and exit successfully.

ENVIRONMENT

       DEBEMAIL, EMAIL, DEBFULLNAME, NAME
              See the above description of the use of these environment variables.

AUTHOR

       Steve Langasek <vorlon@debian.org>

SEE ALSO

       debchange(1)

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