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Full Discussion: Comparing 2 CSV files and sending the difference to a new csv file
Top Forums Shell Programming and Scripting Comparing 2 CSV files and sending the difference to a new csv file Post 302779989 by Naresh101 on Wednesday 13th of March 2013 03:45:25 PM
Old 03-13-2013
Comparing 2 CSV files and sending the difference to a new csv file
(say) I have 2 csv files - file1.csv & file2.csv as mentioned below:

file1.csv
Code:
ID,version,cost                        
1000,1,30     
2000,2,40     
3000,3,50     
4000,4,60


file2.csv
Code:
ID,version,cost     
1000,1,30       
2000,2,45     
3000,4,55   
6000,5,70

The expected o/p is a new csv file say - file3.csv should contain the details of IDs which are present in both the files but with some of the data related to it being different (here version and cost) - and the o/p should be as shown below.

o/p needed (o/p format)
Code:
ID,field,old,new  
2000,cost,40,45     
3000,version,3,4    
3000,cost,50,55

I need a unix bash/ksh script for doing this. Please help me out.
Last edited by Franklin52; 03-14-2013 at 04:20 AM.. Reason: Please use code tags for data and code samples
 

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rec2csv

REC2CSV(1)							   User Commands							REC2CSV(1)

NAME

       rec2csv - rec to csv converter

SYNOPSIS

       rec2csv [OPTIONS]... [REC_FILE]

DESCRIPTION

       Convert rec data into csv data.

       -t, --type=TYPE
	      record set to convert to csv; if this parameter is omitted then the default record set is used

       -S, --sort=FIELD
	      sort the output by the specified field.

       --help print a help message and exit.

       --version
	      show version and exit.

AUTHOR

       Written by Jose E. Marchesi.

REPORTING BUGS

       Report bugs to: bug-recutils@gnu.org
       GNU recutils home page: <http://www.gnu.org/software/recutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>

COPYRIGHT

       Copyright (C) 2010, 2011, 2012 Jose E. Marchesi.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       The  full  documentation  for  rec2csv  is maintained as a Texinfo manual.  If the info and rec2csv programs are properly installed at your
       site, the command

	      info rec2csv

       should give you access to the complete manual.

rec2csv 1.4.93							   January 2012 							REC2CSV(1)
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