searching words in Greek in Unix and Perl

Question

I have txt files that are greek and now I want to search specific words in them using perl and bash ... the words are like ?a?, t?, e??

I was searching for words in english and now want to replace them by greek but all I get is ??? mostly... for Perl:

my %word = map { $_ => 1 } qw/name date birth/;

and for bash

for X in name date birth
do

can someone please help me?

Answer 1

#!/usr/bin/perl
use strict;
use warnings;

# Tell Perl your code is encoded using UTF-8.
use utf8;

# Tell Perl input and output is encoded using UTF-8.
use open ':std', ':encoding(UTF-8)';

my @words = qw( καί τό εἰς );

my %words = map { $_ => 1 } @words;
my $pat = join '|', map quotemeta, keys %words;

while (<>) {
   if (/$pat/) {
      print;
   }
}

Usage:

script.pl file.in >file.out

Notes:

• Make sure the source code is encoded using UTF-8 and that you use use utf8;.
• Make sure you use the use open line and specify the appropriate encoding for your data file. (If it's not UTF-8, change it.)