smbpasswd

Change current user's SMB password

$ smbpasswd

$ sudo smbpasswd -a [username]

$ sudo smbpasswd [username]

$ sudo smbpasswd -x [username]

$ sudo smbpasswd -e [username]

$ sudo smbpasswd -d [username]

smbpasswd [options] [username]

smbpasswd manages Samba user passwords. It allows users to change their own SMB password, and administrators to add, remove, or modify Samba user accounts.
Samba users must have an existing local Unix account before being added. The Samba password database is separate from the system password.

-a

Add a new Samba user

Delete a Samba user

Disable a Samba user account

Enable a previously disabled account

Set null password (requires null passwords enabled)

Change password on remote machine

Use specified username on remote machine

Read password from stdin (silent mode)

Users must exist in the Unix system before being added to Samba. If a Unix account is deleted before the Samba account, use pdbedit instead to remove the Samba entry.

pdbedit(8), samba(7), smb.conf(5)