Comparing 2 csv files and matching content

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Top Forums Shell Programming and Scripting Comparing 2 csv files and matching content
# 8  
Old 08-31-2009
This works for me:
> cat csv-file1
1111,1111,aaa1, aaa2, aaan
2222,2222,aaa1, bbb2, bbbn
3333,3333,aaa1, ccc2, cccn
4444,4444,bbb1, bbb2,  bbbn
5555,5555,zzz1, zzz2,  zzzn
> cat csv-file2
aaa1, matchvalue1
ccc1, matchvalue2
bbb1, matchvalue3
> nawk 'NR==FNR{a[$1]=","$2;next}{$0=$0""a[$3]}1' FS=',' csv-file2 csv-file1
1111,1111,aaa1, aaa2, aaan, matchvalue1
2222,2222,aaa1, bbb2, bbbn, matchvalue1
3333,3333,aaa1, ccc2, cccn, matchvalue1
4444,4444,bbb1, bbb2,  bbbn, matchvalue3
5555,5555,zzz1, zzz2,  zzzn

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obd2csv(1)						      General Commands Manual							obd2csv(1)

obd2csv - Convert obdgpslogger(1) logs to csv files SYNOPSIS
obd2csv [ options ] DESCRIPTION
Convert obdgpslogger(1) logs to csv files OPTIONS
-o|--out <output filename> Output to this .csv file -d|--db <database> Work from logs stored in this database file -s|--start <time> Only dump rows more recent than this -e|--end <time> Only dump rows older than this -z|--gzip gzip compress output using zlib [if available] -v|--version Print out version number and exit. -h|--help Print out help and exit. NOT OPTIONS
These options aren't intended for end-users, they're for the GUI. -p|--progress Print out progress. It will occasionally print a number in the range [0..100], indicating progress percentage. SEE ALSO
obdgpslogger(1), obd2kml(1), obd2gpx(1), obdsim(1), obdgui(1), obdlogrepair(1) AUTHORS
Gary "Chunky Ks" Briggs <> obd2csv(1)

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