true - return true value
true
The true utility shall return with exit code zero.
None.
None.
Not used.
None.
None.
Default.
Not used.
Not used.
None.
None.
Zero.
None.
This utility is typically used in shell scripts, as shown in the EXAMPLES section. The special built-in utility : is sometimes more efficient than true.
This command is executed forever:
while true do command done
The true utility has been retained in this volume of IEEE Std 1003.1-2001, even though the shell special built-in : provides similar functionality, because true is widely used in historical scripts and is less cryptic to novice script readers.
None.
First released in Issue 2.
IEEE Std 1003.1-2001/Cor 1-2002, item XCU/TC1/D6/39 is applied, replacing the terms ``None'' and ``Default'' from the STDERR and EXIT STATUS sections, respectively, with terms as defined in Utility Description Defaults.