Here is a File::Find solution
#!/usr/bin/perl
# non recursive case insensitive search down
# thru current directory for pattern in filenames.
use warnings;
use strict;
use File::Find;
$|++;
my $search = $ARGV[0] or die "need search pattern $!\n";
my $path = '.';
my $regex = qr/\Q$search\E/i;
find (sub {
#prevent recursion into subdirs
my $n = ($File::Find::name) =~ tr!/!!; #count slashes in file
return $File::Find::prune = 1 if ($n > 1);
return if -d;
# return unless (-f and -T ); # limit to text files
print "$File::Find::name\n" if /$regex/;
}, $path);
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