GDB has a built-in TUI mode with single key operation

The GNU Debugger (GDB) has a built-in TUI mode that can be accessed with the tui command or by passing -tui on the command line. It provides:

• Source file view
• Multiple windows (using Emacs keybindings)
• Single Key mode (enter/exit using Ctrl+x, s)

That last one is exciting because it allows for quickly stepping through code using:

• n: "next" (which I would call "step over")
• s: "step" (which I would call "step into")
• f: "finish" (whicih I would call "step out")

I've never enjoyed using GDB because I never took the time to learn it. As someone with extensive experience in WinDbg, I didn't understand how Linux developers could put up with GDB's clunky line-based interface--it turns out they probably don't! I suspect they use GDB's TUI mode, a separate GDB frontend, ... or printf debugging!