Is evaluating random text dangerous? [closed]

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I've been passing time this afternoon by generating random strings and passing them through Perl's eval. The scripts are strings that contain only the following characters:

+-*$_.,/\@()%=`

Is there a statistically significant risk that I break something?

Note: I don't pass it arguments like "rm -rf /".

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Statistically significant from a statistician's point of view, no. From a programmers point of view yes. Any percentage of risk that can be avoided is too much.

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$! can resolve to a wide variety of strings, depending on platform and locale. So perhaps something like

eval "$!=$$/$.,`$!`"

has the potential for mischief.

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My gut says that answering this question definitively (i.e., with an actual probability) would probably end up placing a bound on Chaitin's constant which is incomputable. So it's most likely not possible (mathematically speaking) to answer your question.

Why not just sandbox the Perl process if you're worried?