I tried the following: 
my %hashvariable;
@hashvariable{@variable} = @vardescription;
my $TestText;

{
    local $/;
    open( my $in, '<', "Test.txt" ) or die "cannot open Test.txt $!";
    my $TestText = <$in>;
    close $in;
}

$TestText =~ s/$_/$hashvariable{$_}/g for keys %hashvariable;

open( my $out, '>', "TestFinal.txt" ) or die "cannot create TestFinal 
+$!";
print $out $TestText;
close $out;

[download]
Output file TestFinal.txt is empty. Am I doing anything wrong?

In reply to Re^2: Replace many array element with another corresponding array element in a file by faezshingeri
in thread Replace many array element with another corresponding array element in a file by faezshingeri

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