Which command provides functionality for NT Quotas in Samba?

The command that provides functionality for NT Quotas in Samba is smbcquotas. This command is specifically designed to manage and report on NT-style disk quotas within a Samba environment. This includes the ability to set limits on how much disk space a user can use, making it a valuable tool for managing resources in file sharing scenarios where users may have differing storage needs.

In contrast, smbpasswd is primarily used for managing Samba user passwords and does not handle quota management. The smbclient command is a tool for accessing files on Samba shares and does not include quota functionality. Lastly, samba-tool is generally used for managing Samba Active Directory installations and domain operations, and while it offers a wide range of functionalities, it does not pertain directly to NT Quotas. Thus, smbcquotas stands out as the appropriate tool for managing quotas in a Samba setup.