To install additional packages for Cygwin, do I just need to run the setup.exe
again and choose from the packages list?
Also, doing this won\'t harm my
No, it doesn't hurt the current setup. The install program knows what's installed already.
Having said that, I long ago got into the habit of installing all of Cygwin since, despite its size, it's still minuscule compared to the size of modern hard disks. That way, you won't ever have to worry about whether a package is installed or not.