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  1. or download this
    #! perl -sl
use strict;
...

    1;
}
  2. or download this
    C:\test>perl -c test.pl
Global symbol "$FRED" requires explicit package name at test.pl line 1
+0.
test.pl had compilation errors.
  3. or download this
    #! perl -sl

...

X::test();
  4. or download this
    C:\test>perl -c test.pl
test.pl syntax OK