Main reason I will download and examine instead of blindly run is that often the install script will fail to work as advertised or it will mess up my desired f

Main reason I will download and examine instead of blindly run is that often the install script will fail to work as advertised or it will mess up my desired file system conventions. In both cases I'll need to check and perhaps modify the script so it must be bodily downloaded prior to executing. While looking for these problems I also check for obvious malicious instructions.