bc, cc, dd, df, du, ip, jq, nc, ps, ss, su, tr, wc, xz are some I use regularly. There are others. But it's not coincidence that the basic file operations you'v

bc, cc, dd, df, du, ip, jq, nc, ps, ss, su, tr, wc, xz are some I use regularly. There are others. But it's not coincidence that the basic file operations you've mentioned are very short: they're the most common used commands in the interactive shell. > Those two-letter commands are only really needed because UNIX started on paper ttys and follows "ed" in its "don't show current context to the user" philosophy Today they need to be short so they're just quick to type. You can set $PS1 just fine and it shows you as much (or as little) context as you'd like. It's only scary to people watching over the shoulder, because it's just faster than anything else. Close second place is Windows 95/98 "Start" menu and "Explorer", both of which also can be operated with keyboard, thought only for browsing directories deeper — and some Linux DEs like Cinnamon menu can also be worked in similar fashion.