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  1. or download this
    $ cat pm_1049671_temp.txt
    a b c
    d e f
    g h i
    
  2. or download this
    $ perl -Mstrict -Mwarnings -le '
        my @numbers;
    ...
        print "@numbers";
    ' pm_1049671_temp.txt
    a b c d e f g h i
    
  3. or download this
    $ cat pm_1049671_2temp.txt
    j k l
    m n o
    p q r
    
  4. or download this
    $ perl -Mstrict -Mwarnings -le '
        my @numbers;
    ...
        print "@numbers";
    ' pm_1049671_temp.txt pm_1049671_2temp.txt
    a b c d e f g h i j k l m n o p q r
    
  5. or download this
    $ perl -Mstrict -Mwarnings -le '
        print "@ARGV";   
    ' pm_1049671_temp.txt pm_1049671_2temp.txt
    pm_1049671_temp.txt pm_1049671_2temp.txt