Older commands can still be faster—and more flexible, powerful, and accessible too!

After two and a half decades of working with Unix, I’ve seen a lot of change in my favorite OS and, at the same time, retained a number of favorite commands that continue to keep my job as a Unix ...

I booted UNIX V4 (first C rewrite) in a PDP‑11 emulator. It feels tactile—no backspace, staggered print, slower typing, and it forced me to slow down. Classic Unix tools (ls, cat, ed, cal, dc) and ...

Secure Copy is a UNIX standard used to transfer files from one computer to another. He's how to use the function in macOS, all via the Terminal window. Before personal computers, there were mainframe ...