Newb questions 
How do I remove cmake version x and downgrade to version y?
How to manage cmake versions on different linux distributions?
I installed the latest version of cmake - 3.27.0-rc4 . I’d like to go back a few versions and install an earlier version. It is as simple as repeating the install with 3.17.x? Or will that break things.
We have a mix of developer workstations (redhat and ubuntu). They come with different cmake versions. For complicated reasons I was asked to standardize on ‘the’ version currently used by our runners, and that version is not available in the distro’s repository.
I don’t mind telling them ‘download and compile’  but if there is a utility that allows one to hop between versions, that would be slick.
 Long time sysadmin, first time having to worry about specific versions of cmake.
- download from https://cmake.org/download/,
- make install