[friendcomputer]

If you want a full featured local linux command line, you can switch to developer mode and install one in a chroot via something like https://github.com/dnschneid/crouton

This does sidestep some of the security features of the device, but it's fine if you really want it. Or you can just ssh somewhere.

[rbanffy]

I found OSX with MacPorts to be quite enough most of the time. I can run editors and such on the Mac side and test the application from within a small VM.

[darcyparker]

Not homebrew?

[rbanffy]

I've had some breakage with Brew, so, I tend to prefer MacPorts. Not that much of a difference between them for what I do.

[hutattedonmyarm]

both is possible