You look like you've got it figured out except for reading the entire file, not one line at a time. To read the entire file, you can set $/ to undef or use File::Slurp. 
use File::Slurp "read_file";
my $data = read_file($tmpfile);
$data =~ tr/\r\n//d;

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In reply to Re: How to remove all new line ? by ysth
in thread How to remove all new line ? by bh_perl

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