Sudo lets you run any terminal command as another user — hence "substitute user" — but the default and most common use for it ...
There are many others. You can find systems to work with, for example, NTFS and a slew of cloud service providers. If this is such a great idea, is there a Windows equivalent? Yes, there is. Winfsp ...
There are certain Linux commands I consider essential. They range from networking, troubleshooting, and file viewing. They're also easy enough for new users to learn. Even though I've been using Linux ...