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( invocation

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`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.

   By default, `false' honors the `--help' and `--version' options.
However, that is contrary to POSIX, so when the environment variable
`POSIXLY_CORRECT' is set, `false' ignores _all_ command line arguments,
including `--help' and `--version'.

   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.

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