I think it's a good option for installers, but really, just depends on what the program is supposed to be doing. If it can do only one thing, then it's best to hard code these things or have them in a config file. A standard Linux program should have something in /etc also.

If a user is going to the commandoline, then they usually know what they are doing, otherwise they would be using the GUI tools for installing things. If they forgot the switches, with half a brain, they would read the man page (if it has one).

It also creates a lot more work for the programmer and we're all lazy.

Gavin.