You can run the adjoin command interactively or in a script to join UNIX computers to Active Directory. One advantage to using the adjoin command is that it enables you to add the join operation to the steps for building a new UNIX computer. For example, if you have a process for provisioning a new UNIX computer, you can add an adjoin step that allows the new UNIX computer to join itself to Active Directory. Provisioning new computers to join the domain when they are built ensures that there are no new local users being defined on those UNIX computers.
On UNIX, running adjoin requires you to log on as root, be a member of the wheel group, or have root equivalent privileges in the sudoers file. On Mac OS X computers, adjoin requires the administrator account and password.