Type help at the ASMCMD prompt or as a command in noninteractive mode to view general information about ASMCMD and a list of available ASMCMD commands.
You can type help command to display help text for a specific command, including usage information about how to run the command with its options.
The following is an example of the use of the help command.
Example 10-5 Displaying ASMCMD help text
ASMCMD [+] > help startup
startup [--nomount] [--restrict] [--pfile <pfile.ora>]
Start the ASM instance.
[--nomount] specifies the nomount option.
[--restrict] start the instance in restricted mode.
[--pfile <pfile.ora>] specifies the location of the pfile.