![]() In Unix-like computer OSes (such as Linux), root is the conventional name of the user who has all rights or permissions (to all files and programs) in all modes (single- or multi-user). The principle of least privilege recommends that most users and applications run under an ordinary account to perform their work, as a superuser account is capable of making unrestricted, potentially adverse, system-wide changes. In some cases, the actual name of the account is not the determining factor on Unix-like systems, for example, the user with a user identifier (UID) of zero is the superuser, regardless of the name of that account and in systems which implement a role based security model, any user with the role of superuser (or its synonyms) can carry out all actions of the superuser account. ![]() Depending on the operating system (OS), the actual name of this account might be root, administrator, admin or supervisor. In computing, the superuser is a special user account used for system administration. ![]()
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