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 a semi-special built-in. In the POSIX standard, it is defined as a command with unspecified behavior.

Many built-ins of yash accept the --help option that prints the same description.