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root

1. The Unix superuser account (with user name "root" and user ID 0) that overrides file permissions. The term avatar is also used. By extension, the privileged system-maintenance login on any operating system.

See root mode, go root, wheel.

[Jargon File]

(1994-10-27)

2. root directory.

(1996-11-21)

3. root node.

(1998-11-14)