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Top Forums UNIX for Advanced & Expert Users Unix Bash: substitute columns in .csv using other .csv columns Post 302485076 by abhivyas on Tuesday 4th of January 2011 07:50:05 AM
Old 01-04-2011
Unix Bash: substitute columns in .csv using other .csv columns

Hi All,

I have two .csv's

input.csv having values as (7 columns)
Code:
ABC,A19907103,ABC DEV YUNG,2.17,1000,2157,07/07/2006
XYZ,H00213850,MM TRUP HILL,38.38,580,23308,31/08/2010

output.csv having (25 columns)
Code:
A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y
A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y

I want to put values of input.csv into output.csv at different column positions

Mapping:
Code:
1 2 3 4 5 6 7
7 11 13 15 20 21

Can you please help suggest how this can be done. I tried using awk but unsuccessful

If I just try to substitute output.csv's Column7 with input.csv's column 1.. but get no output with below command.
Code:
/usr/xpg4/bin/awk 'BEGIN {FS="," ; OFS=","} FNR == NR {a[FNR] = $B; next} $A = a[FNR]' B=2 A=4 input.csv output.csv

Please help or provide a good link. Thanks a lot


Moderator's Comments:
Mod Comment Please use code tags when posting data and code samples!

Last edited by Franklin52; 01-04-2011 at 09:06 AM..
 

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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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