Maybe what you're thinking is chomp(@md5_file); my $md5_re = join "|", map quotemeta, @md5_file; and then later if ($md5=~/^($md5_re)$/){.

But why not use a hash?

In reply to Re^5: Checking MD5 of files in directory with corresponding MD5 file type by Anonymous Monk
in thread Checking MD5 of files in directory with corresponding MD5 file type by deedo

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