https://docs.oracle.com/en/database/oracle/oracle-database/19/ostmg/asmcmd-filegroup-commands.html
ASMCMD File Group Management Commands
This topic provides a summary of the ASMCMD commands that enable you to manage Oracle ASM file groups and quota groups.
group managementfilecommands
https://docs.oracle.com/en/database/oracle/oracle-database/12.2/ostmg/asmcmd-instance-commands.html
ASMCMD Instance Management Commands
This topic provides a summary of the ASMCMD instance management commands.
instance managementcommands