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Top Forums Shell Programming and Scripting How to compare two columns in two files? Post 302357531 by Ghetz on Wednesday 30th of September 2009 05:29:04 AM
Old 09-30-2009
This is my code:

Code:
#/!bin/bash

NR==FNR{a[$1FS$2]=$0;next}a[tolower($1FS$2)]{print a[tolower($1FS$2)],"->",$0}' file1 file2 >file3

I previously tried it in Cygwin, which gave an output on a single line.

But on a Mac I get the following error:

Code:
line 3: syntax error near unexpected token `$1FS$2'
./match.sh: line 3: `NR==FNR{a[$1FS$2]=$0;next}a[tolower($1FS$2)]{print a[tolower($1FS$2)],"->",$0}' file1 file2 >file3'

Any ideas?

Thanks

---------- Post updated at 10:29 AM ---------- Previous update was at 10:24 AM ----------

danmero

Please ignore my previous post. Your code works fine.

I typed the code incorrectly. My bad.

Thanks
 

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DIFF3(1)						      General Commands Manual							  DIFF3(1)

NAME
diff3 - 3-way differential file comparison SYNOPSIS
diff3 [ -ex3 ] file1 file2 file3 DESCRIPTION
Diff3 compares three versions of a file, and publishes disagreeing ranges of text flagged with these codes: ==== all three files differ ====1 file1 is different ====2 file2 is different ====3 file3 is different The type of change suffered in converting a given range of a given file to some other is indicated in one of these ways: f : n1 a Text is to be appended after line number n1 in file f, where f = 1, 2, or 3. f : n1 , n2 c Text is to be changed in the range line n1 to line n2. If n1 = n2, the range may be abbreviated to n1. The original contents of the range follows immediately after a c indication. When the contents of two files are identical, the contents of the lower-numbered file is suppressed. Under the -e option, diff3 publishes a script for the editor ed that will incorporate into file1 all changes between file2 and file3, i.e. the changes that normally would be flagged ==== and ====3. Option -x (-3) produces a script to incorporate only changes flagged ==== (====3). The following command will apply the resulting script to `file1'. (cat script; echo '1,$p') | ed - file1 FILES
/tmp/d3????? /usr/lib/diff3 SEE ALSO
diff(1) BUGS
Text lines that consist of a single `.' will defeat -e. Files longer than 64K bytes won't work. DIFF3(1)
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