ttydetach 1 user commands djbwares ttydetach run program without a controlling tty ttydetach subprogram args ttydetach eliminates its controlling tty, removes any TTY variable from the environment, and runs subprogram. On POSIX systems, ttydetach must not be a process group leader. ttydetach was originally part of Daniel J. Bernstein's ptyget toolset in 1996. Original code and documentation by Daniel J. Bernstein. Documentation modernizations by Jonathan de Boyne Pollard.