Help adb shell usable unrooted

[Android Question]

I want to get adb shell, sdk, etc. but I don't know if they would work unrooted. Also I am running out of room (not really) with 10+ GB SD. How can I get Lollipop to use SD instead of emulated? The main thing I want is to have enough room for apps, mp3s, etc. Is it true that there has to be at least 200 MB internal storage? Please advise.

 

[Slug]

I want to get adb shell, sdk, etc. but I don't know if they would work unrooted.

Neither require root to be usable. Whether root is required depends on what you want to do with them.

How can I get Lollipop to use SD instead of emulated?

You can't, not without rooting.

Is it true that there has to be at least 200 MB internal storage?

I expect that the precise figure varies by device, but yes a minimum amount of available storage is required by the OS.