Re^4: Executing a string as a Perl command

in reply to Re^3: Executing a string as a Perl command
in thread Executing a string as a Perl command

This short illustrative example has $cmd set inline, but in a real program, it could be constructed from other variables, it could be read from a user, it could be read from a file, etc.

The question was simply how to get it to execute once it was set. The answer is eval.

Comment on Re^4: Executing a string as a Perl command

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Re^5: Executing a string as a Perl command by Anonymous Monk on May 16, 2011 at 11:01 UTC
eval is the wrong answer since it can run arbitrary code If the user gives you some form of `# rm -rf * ~ /`, a lot of your files get deleted	[reply] [d/l]
Re^6: Executing a string as a Perl command by ctilmes (Vicar) on May 16, 2011 at 13:25 UTC
The OP said nothing about a user supplying the string. We pointed out that there are security concerns if you don't trust the string. If you want to run arbitrary code supplied by a 100% trusted source at runtime, what would you use other than eval?	[reply]

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