Unless you're read to fully analyze all the code and look for problems in the whole code, instead of just the install script, don't be an eager early adopter of every project you see posted somewhere, wait for it to have some social validation, give it sometime so smarter people with more time than us had their time looking for vulnerabilities in the whole code, not only on the script. Or if you really want to check it, use an isolated VM first.
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A far better advice would be to:
Unless you're read to fully analyze all the code and look for problems in the whole code, instead of just the install script, don't be an eager early adopter of every project you see posted somewhere, wait for it to have some social validation, give it sometime so smarter people with more time than us had their time looking for vulnerabilities in the whole code, not only on the script. Or if you really want to check it, use an isolated VM first.