It is usually a good idea to Super Search before posting - this question is nearly a FAQ. A quick search identified these threads:

The short answer: system, exec, backticks (see perlop), qx//.

If, by "invoke" you mean use a module, then use, require, or do is usually the way to go. Again, the docs and Super Search will get you started.

In reply to Re: Invoking Perl script from a perl script by bobf
in thread Invoking Perl script from a perl script by visshal

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