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|man pages section 1: User Commands Oracle Solaris 11 Information Library|
- provide truth values
The true utility does nothing, successfully. The false utility does nothing, unsuccessfully. They are typically used in a shell script sh as:
while true do command done
which executes command forever.
true has exit status 0.
false always will exit with a non-zero value.
See attributes(5) for descriptions of the following attributes: