Which command would be used to search for all available workgroups/domains and NetBIOS names?

`nmblookup` is used for direct NetBIOS name resolution (name to IP or IP to name), not for a comprehensive discovery of all available workgroups and domains.

The `findsmb` command is a utility provided by Samba that broadcasts queries on the network to discover and display information about all active Samba/SMB servers, including their workgroups, domains, NetBIOS names, and IP addresses.

`smbget` is a client utility used for downloading files from an SMB/CIFS share, similar to the `wget` command.

`smbclient` is an interactive client for connecting to and browsing individual SMB/CIFS shares, not for broadly discovering all network resources.