Use the help Command - Oracle® OpenBoot 4.x Administration Guide

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Use the `help` Command

Whenever you see the ok prompt on the display, you can access OpenBoot help by typing one of the help commands.

Name	Description
`help`	Provides information for a category or a specific command. If `name` is a specific command, lists help for that command, if available. Otherwise, displays an implementation-dependent message. Used as: `ok` `help` `command-name` If `name` is a category, lists all help messages for commands in that category or a list of subcategories. Used as: `ok` `help` `category-name` If `name` is omitted, provides general help and a list of available categories. Commands should be grouped into categories so that the help messages for a category occupy no more than twenty-three output lines. Categories can be divided into subcategories. The number and names of categories are implementation dependent.
`help category`	Shows help for all commands in the category. Use only the first word of the category description.
`help command`	Shows help for individual commands (when available).

Access the OpenBoot CLI.
See Access the OpenBoot CLI (Solaris Running) or Access the OpenBoot CLI (OpenBoot Running)

Use one of these commands:

Display the help messages for all the commands in a selected category, or, possibly, a list of subcategories.
```
{0} ok help category
```

Display help for a specific command.

{0} ok help command

Examples:

{0} ok help diag
test <device-specifier> Run selftest method for specified device
  Examples:
    test net - test net
    test scsi - test scsi
test-all Execute test for all devices with selftest method
watch-net Monitor network broadcast packets
watch-net-all Monitor broadcast packets on all net interfaces
probe-scsi Show attached SCSI devices
probe-scsi-all Show attached SCSI devices for all host adapters

{0} ok help memory
dump ( addr length -- ) Display memory at addr for length bytes
fill ( addr length byte -- ) Fill memory starting at addr with byte
move ( src dest length -- ) Copy length bytes from src to dest address
map? ( vaddr -- ) Show memory map information for the virtual address
x? ( addr -- ) Display the 64-bit number from location addr
l? ( addr -- ) Display the 32-bit number from location addr
w? ( addr -- ) Display the 16-bit number from location addr
c? ( addr -- ) Display the 8-bit number from location addr
x@ ( addr -- n ) Place on the stack the 64-bit data at location addr
l@ ( addr -- n ) Place on the stack the 32-bit data at location addr
w@ ( addr -- n ) Place on the stack the 16-bit data at location addr
c@ ( addr -- n ) Place on the stack the 8-bit data at location addr
x! ( n addr -- ) Store the 64-bit value n at location addr
l! ( n addr -- ) Store the 32-bit value n at location addr
w! ( n addr -- ) Store the 16-bit value n at location addr
c! ( n addr -- ) Store the 8-bit value n at location addr

Note - In some newer systems, descriptions of additional system-specific commands are available with the help command. Help as described might not be available on all systems.

Related Information

Using the OpenBoot CLI