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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 302915549 by Franklin52 on Wednesday 3rd of September 2014 05:14:26 PM
Old 09-03-2014
Another approach:
Code:
awk -F, 'NR==FNR {a[$2,$3]=$1; next} FNR==1 {$1="ID" FS $1} a[$1,$2] {$1=a[$1,$2] FS $1}1' OFS=, file2 file1


Last edited by Franklin52; 09-03-2014 at 06:21 PM..
 

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XZDIFF(1)							     XZ Utils								 XZDIFF(1)

NAME
xzcmp, xzdiff, lzcmp, lzdiff - compare compressed files SYNOPSIS
xzcmp [cmp_options] file1 [file2] xzdiff [diff_options] file1 [file2] lzcmp [cmp_options] file1 [file2] lzdiff [diff_options] file1 [file2] DESCRIPTION
xzcmp and xdiff invoke cmp(1) or diff(1) on files compressed with xz(1), lzma(1), gzip(1), or bzip2(1). All options specified are passed directly to cmp or diff. If only one file is specified, then the files compared are file1 (which must have a suffix of a supported com- pression format) and file1 from which the compression format suffix has been stripped. If two files are specified, then they are uncom- pressed if necessary and fed to cmp(1) or diff(1). The exit status from cmp or diff is preserved. The names lzcmp and lzdiff are provided for backward compatibility with LZMA Utils. SEE ALSO
cmp(1), diff(1), xz(1), gzip(1), bzip2(1), zdiff(1) BUGS
Messages from the cmp(1) or diff(1) programs refer to temporary filenames instead of those specified. Tukaani 2009-07-05 XZDIFF(1)
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