Control-\

In computing, control-\ is a control character in ASCII code, also known as the field separator (FS) character. It is generated by pressing the \ key while holding down the Ctrl key on a computer keyboard.

Under most UNIX based operating systems control-\ is used to terminate a running process from a command shell and have it produce a memory core dump by sending it a SIGQUIT signal.

In the Emacs text editor, it is the default keystroke mapping for the undo function (cf. Ctrl-Z in other editors).

See also

• Control-C
• Control-Z