Forget Flags and Scripts: Just Rename the File

The article proposes using a program's own filename as its configuration interface instead of flags or scripts. By encoding parameters like module names, hyperparameters, or VPN endpoints directly into the filename, programs become self-contained and instantly shareable—renaming the file changes behavior with zero setup. Examples include reusable installers, ML experiment runners, ephemeral utilities, and P2P VPN tunnels.