When Apple announced the release of Mac OS X, many Mac users were stunned: here was a new operating system based on the venerable Unix, which, they feared, would call into question the Mac’s legendary ...

Unix was developed as a command line interface in the early 1970s with a very rich command vocabulary. DOS followed more than a decade later for the IBM PC, and DOS commands migrated to Windows.

I use the Linux command line daily, but that's because I learned Linux the hard way and those old lessons stuck. Most users could go their entire Linux lifetime and never run a single command. Some ...