Do nothing, returning a non-zero (false) exit status

false&qt;false&qt;&qt; does nothing except return an exit status of 1, meaning "failure". It can be used as a place holder in shell scripts where an
unsuccessful command is needed.

&qt;false&qt;&qt; ignores all command line arguments, even &qt;–help&qt;&qt; and &qt;–version&qt;&qt;, since to do otherwise would change expected behavior that some programmers may be relying on.

This version of &qt;false&qt;&qt; is implemented as a C program, and is thus more secure and faster than a shell script implementation, and may safely be used as a dummy shell for the purpose of disabling accounts.