The help built-in prints usage of built-ins.
Syntax
-
help [built-in…]
Description
The help built-in prints a description of built-ins.
Operands
- built-ins
-
Names of built-ins.
Exit status
The exit status of the help built-in is zero unless there is any error.
Notes
The help built-in is an elective built-in. It cannot be used in the POSIXly-correct mode because POSIX does not define its behavior.
Many built-ins of yash accept the --help option that prints the same
description.