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  1. or download this
    picard:~ [10:30:46]$ perl -MFatal=open -e 'open F, "<", \"foo"'
    picard:~ [10:31:02]$ ^<^<:raw
    perl -MFatal=open -e 'open F, "<:raw", \"foo"'
    Can't open(F, <:raw, SCALAR(0x814fe04)): No such file or directory at 
    +(eval 1) line 3
            main::__ANON__('F', '<:raw', 'SCALAR(0x814fe04)') called at -e
    + line 1
    
  2. or download this
    picard:~ [10:35:09]$ perl -MFatal=open -e 'open F, ">", \$a'
    picard:~ [10:35:11]$ ^>^>:raw
    perl -MFatal=open -e 'open F, ">:raw", \$a'
    picard:~ [10:35:34]$ ls SCALAR\(0x814fe04\)
    SCALAR(0x814fe04)