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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.
false honors the `--help' and `--version'
options. However, that is contrary to POSIX, so when the environment
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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