Learn Core GNU Utilities
I believe that there are some things you just have to learn and memorize through repetition, and no shortcuts will help. One of those things is GNU Coreutils , a collection of standard shell commands that we all use every day. Do any of these commands look familiar to you? I'd bet most do: cat , chmod , cp , echo , ls , mv , pwd , rm , sort , touch , and many more. The coreutils collection/branding is 20+ years old, but the individual utitilies are 40+ years old. They have withstood the test of …