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  1. or download this
        grep { s/user::/USER:$o:/} @A; # make native Linux dir/file permis
    +sions uppercase
        grep { s/group::/GROUP:$g:/} @A; # idem
        grep { s/other::/OTHER::/} @A; # idem
    
  2. or download this
        s/user::/USER:$o:/ for @A; # make native Linux dir/file permission
    +s uppercase
        s/group::/GROUP:$g:/ for @A; # idem
        s/other::/OTHER::/ for @A; # idem
    
  3. or download this
        $P{$k} =~ s/(?:user|group):[\s\S]*\K(other:.*)//mi;
    
  4. or download this
        $P{$k} =~ s/[\n\r\s]+/ /g; # remove newlines