Install New Software
With just the software macOS includes (and perhaps a few shell scripts you write on your own or find on the web), you can do a tremendous number of useful activities on the command line. But sooner or later you’re likely to encounter a task that requires a command-line program you don’t already have, which means you’ll have to find and install it yourself. (Admittedly, this is not for everyone, and if the next few paragraphs give you a headache, skip ahead to Command-Line Recipes and forget I ever mentioned installing your own software!)
Fortunately, the vast majority of command-line software created for Unix and Unix-like operating systems (such as the various Linux distributions) can run on your Mac too! (Refer back to ...
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