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Full Discussion: Comparing two CSV files
Top Forums Shell Programming and Scripting Comparing two CSV files Post 302974636 by dan139 on Wednesday 1st of June 2016 05:18:18 PM
Old 06-01-2016
Quote:
Originally Posted by Aia
Give this a try:
Code:
awk 'FNR==NR {zip[$1]; next} $NF in zip' file1 file2

Code:
FNR==NR # this condition is true only for the first file
{zip[$1]; next} # record the zips from file1 only
$NF in zip # if the zip, (last column) in file2, is found in the records, display

Output:
Code:
ID                 Name            City                 ZipCode
12343     Washington             DC                   20878
54211        Maryland           Silver Spring         20304
54877       Missouri              St. Louis             10023


Thanks for the reply. So I realized that my data in file 2, it has the Zipcode in column #2, not the last the column. would the command be:

Code:
awk 'FNR==NR {zip[$1]; next} $2 in zip' file1 file2

I tried both versions and nothing was in the output so not really sure.
 

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COMBINE(1)																COMBINE(1)

NAME
combine - combine sets of lines from two files using boolean operations SYNOPSIS
combine file1 and file2 combine file1 not file2 combine file1 or file2 combine file1 xor file2 _ file1 and file2 _ _ file1 not file2 _ _ file1 or file2 _ _ file1 xor file2 _ DESCRIPTION
combine combines the lines in two files. Depending on the boolean operation specified, the contents will be combined in different ways: and Outputs lines that are in file1 if they are also present in file2. not Outputs lines that are in file1 but not in file2. or Outputs lines that are in file1 or file2. xor Outputs lines that are in either file1 or file2, but not in both files. "-" can be specified for either file to read stdin for that file. The input files need not be sorted, and the lines are output in the order they occur in file1 (followed by the order they occur in file2 for the two "or" operations). Bear in mind that this means that the operations are not commutative; "a and b" will not necessarily be the same as "b and a". To obtain commutative behavior sort and uniq the result. Note that this program can be installed as "_" to allow for the syntactic sugar shown in the latter half of the synopsis (similar to the test/[ command). It is not currently installed as "_" by default, but you can alias it to that if you like. SEE ALSO
join(1) AUTHOR
Copyright 2006 by Joey Hess <joey@kitenet.net> Licensed under the GNU GPL. moreutils 2012-04-09 COMBINE(1)
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