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Top Forums Shell Programming and Scripting awk script to perform an action similar to vlookup between two csv files in UNIX Post 302915547 by Chubler_XL on Wednesday 3rd of September 2014 05:09:50 PM
Old 09-03-2014
this should work, not if your headings matched in file 2 the hard-coded assign of ID would not be required:

Code:
awk -F, 'FNR==NR{a[$2,$3]=$1;next}
{
  if($1 SUBSEP $2 in a) $1=a[$1,$2] OFS $1
  else $1=OFS $1
  if(FNR==1) $1="ID"
}1' OFS="," file2.csv file1.csv

 

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obd2csv(1)						      General Commands Manual							obd2csv(1)

NAME
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 <chunky@icculus.org> obd2csv(1)
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