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手册页第 1 部分：用户命令 Oracle Solaris 11 Information Library (简体中文) |
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手册页第 1 部分：用户命令 Oracle Solaris 11 Information Library (简体中文) |
- provide truth values
true
false
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
donewhich 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:
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