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open FILE, $filename or die "Can't open $filename: $!\n";
while (<FILE>) {
    my @data_in = split /\|/, $_;
    # process @data_in
}

perl -e 'print "How sweet does a rose smell? "; chomp $n = <STDIN>; $r
+ose = "smells sweet to degree $n"; *other_name = *rose; print "$other
+_name\n"'