samba-tool drs: This set of commands is used to manage directory replication in an Active Directory domain. DRS stands for Directory Replication Service.
Functionality: It provides various subcommands to monitor, manage, and troubleshoot replication issues.
Other Commands:
samba-tool repl, directory, domain, sync: These do not specifically manage directory replication in the same way as samba-tool drs.
Reference:
Samba DRS Command Documentation