false

false

false does nothing and returns a failure exit status (1). It's the counterpart to true and is used in shell scripts for flow control, testing, and as a placeholder.The command takes no operands and always exits with status 1, indicating failure. This makes it useful in conditional statements, loops that should never execute, and testing error handling.false is a POSIX-standard command and shell builtin, providing a guaranteed failure exit status.

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As a builtin, behavior may vary slightly between shells. Exit status is always 1 (or non-zero). Does absolutely nothing else.

false has been part of Unix since Version 7 (1979). It's one of the simplest Unix commands, existing solely to return a failure status. It's specified by POSIX and implemented as both a standalone utility and shell builtin.

true(1), test(1), bash(1)