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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ifpps(8)							netsniff-ng-toolkit							  ifpps(8)

ifpps - fetch and format kernel network statistics SYNOPSIS
ifpps -d|--dev <netdev> [-t|--interval <sec>][-p|--promisc][-c|--term] [-C|--csv][-H|--csv-tablehead][-l|--loop][-v|--version][-h|--help] DESCRIPTION
A tiny tool to provide top-like reliable networking statistics. ifpps reads out the 'real' kernel statistics, so it does not give erroneous statistics on high I/O load. OPTIONS
ifpps --dev eth0 Fetch eth0 interface statistics. ifpps --dev eth0 --interval 60 --csv Output eth0 interface statistics every minute in CSV format. OPTIONS
-h|--help Print help text and lists all options. -v|--version Print version. -d|--dev <netdev> Device to fetch statistics for i.e., eth0. -p|--promisc Put the device in promiscuous mode -t|--interval <time> Refresh time in sec (default 1 sec) -c|--term Output to terminal -C|--csv Output in CSV format. E.g. post-processing with Gnuplot et al. -H|--csv-tablehead Print CSV table head. -l|--loop Loop terminal output. AUTHOR
Written by Daniel Borkmann <> DOCUMENTATION
Documentation by Emmanuel Roullit <> BUGS
Please report bugs to <> 2012-06-29 ifpps(8)