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jhonsmith

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  1. In unix, with the exception of a few special system process, processes are generated by users (root and others) who have logged onto the system. • During the login process the system queries the password file to obtain two identifications (ID) numbers. • The numbers obtained are in the third and fourth fields of the password entry for the user. • These are respectively , the “real user ID” (UID) and “real group ID”(GID) for the user.
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