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  1. or download this
    $ cat pm_1027453.dat
line1
line2
line3
  2. or download this
    $ perl -Mstrict -Mwarnings -E '
    say do { local $/; <> } =~ /(.*)\Z/m;
' pm_1027453.dat
line3
  3. or download this
    $ perl -Mstrict -Mwarnings -E '
    use Tie::File;
...
    untie @lines;
'
line3