false - phpMan

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File: coreutils.info,  Node: false invocation,  Next: true invocation,  Up: Conditions

16.1 `false': Do nothing, unsuccessfully

`false' 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.  In most modern shells, `false' is a
built-in command, so when you use `false' in a script, you're probably
using the built-in command, not the one documented here.

   `false' honors the `--help' and `--version' options.

   This version of `false' 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.

   Note that `false' (unlike all other programs documented herein)
exits unsuccessfully, even when invoked with `--help' or `--version'.

   Portable programs should not assume that the exit status of `false'
is 1, as it is greater than 1 on some non-GNU hosts.

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