in reply to Executing text

As duff suggests, you should read perlsec.
Just to stress the point: accepting input from an untrusted source - especially when that input will be eval'ed by perl - can be a serious security hole.

Imagine if the input was `rm -rf /`...

If the information in this post is inaccurate, or just plain wrong, don't just downvote - please post explaining what's wrong.
That way everyone learns.