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  1. or download this
    $ perl -c -e'3/0'
-e syntax OK

$ perl -e'3/0'
Illegal division by zero at -e line 1.
  2. or download this
    $ perl -e'chop "fred"'
Can't modify constant item in chop at -e line 1, at EOF
Execution of -e aborted due to compilation errors.
  3. or download this
    $ perl -e'"fred" = $_'
Can't modify constant item in scalar assignment at -e line 1, at EOF
Execution of -e aborted due to compilation errors.