The terminal isn’t a black box. These beginner commands help you navigate, find files, manage apps, and undo mistakes with ...

Sudo lets you run any terminal command as another user — hence "substitute user" — but the default and most common use for it ...

I saw this tip over at OS X Daily today, and it reminded me of all the times I did this as a Mac IT guy a couple of jobs back. See, every so often, the Macs where I worked would start to act weird.