Re^2: compare two files by column and return second (matching) column

This is perfect! Thanks! However, is there a way to print the results into an output file?

Comment on Re^2: compare two files by column and return second (matching) column

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Re^3: compare two files by column and return second (matching) column by Kenosis (Priest) on Aug 07, 2012 at 15:28 UTC
You're most welcome, ejbiers! Yes, the script below includes printing the results to a file: `use Modern::Perl; open my $fhA, '<', 'FileA.txt' or die $!; my %hash = map { /(.+)\t(.+)/; $1 => $2 } grep /\S/, <$fhA>; close $fhA; open my $fhB, '<', 'FileB.txt' or die $!; my @output = map { chomp; $hash{$_} } grep /\S/, <$fhB>; close $fhB; open my $fhO, '>', 'Output.txt' or die $!; say $fhO $_ for @output; close $fhO;` [download]	[reply] [d/l]

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Re^3: compare two files by column and return second (matching) column
by Kenosis (Priest) on Aug 07, 2012 at 15:28 UTC

You're most welcome, ejbiers! Yes, the script below includes printing the results to a file:

use Modern::Perl;

open my $fhA, '<', 'FileA.txt' or die $!;
my %hash = map { /(.+)\t(.+)/; $1 => $2 } grep /\S/, <$fhA>;
close $fhA;

open my $fhB, '<', 'FileB.txt' or die $!;
my @output = map { chomp; $hash{$_} } grep /\S/, <$fhB>;
close $fhB;

open my $fhO, '>', 'Output.txt' or die $!;
say $fhO $_ for @output;
close $fhO;
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