That's really more the fault of the tab completion. There's no reason why it couldn't complete `prog` to `Programs`. It's just Unix tradition that they don't. I would prefer if they did.

▲ fragmede 6 days ago | parent [-]

In ~/.inputrc, add

    set completion-ignore-case on

to enable case insensitive tab completion in bash.

	▲	Gracana 6 days ago \| parent [-]
		Great tip! Apparently that's readline's config file, so this will affect a lot of things. That's great news for me; after switching to zsh I got used to case-insensitive tab completion, and now it annoys me when other tools don't work that way. This should help a lot.