Why Does the Tilde (~) Take You Home? The 1970s Keyboard Legacy Behind Linux’s Shortcut

Whether you're using Windows Subsystem for Linux or a native Linux terminal, you need to master shorthand symbols that speed up navigation.

The tilde ~ represents your home directory, allowing a quick change to the Documents folder with a single command: cd ~/Documents Instead of typing the full absolute path such as /Users/yourname/Documents. This convenience traces back to a 1975 keyboard on the Lear Siegler ADM‑3A "dumb terminal".

The ADM‑3A cost $995 at launch and was widely adopted by institutions, enabling many early software projects to run on a central mainframe. Modern terminal emulators still emulate its behavior.

The key that produces the tilde was originally the HOME key, moving the cursor to the upper‑left corner of the screen. That same key later became the source of the tilde symbol, giving the shortcut its meaning.

The keyboard also placed arrow symbols on the H, J, K, and L keys. Combined with the Control key they became the cursor‑movement shortcuts in vi, which subsequently inspired shortcut schemes in Gmail, Twitter, and even Facebook.

Thus a piece of hardware from the 1970s continues to shape software design decisions more than four decades later.