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LPIC-1/CompTIA Linux+™ Certification All-in-One Exam Guide by Robb Tracy

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• You need to control who can access a Linux system and what they can do with files and directories in the file system after they are in.

• To authenticate to a system, a user must supply a username and password (called credentials).

• Linux restores user-specific information when a user logs in, such as a home directory and desktop environment.

• User home directories are created in /home by default.

• The root user’s home directory is /root.

• You can use the finger command to view information about a user account.

• Every Linux user account has a unique user ID (UID) number assigned to it.

• The root user’s UID is 0.

• The starting UID for standard users is 1000 on some distributions and 500 on others.

• You can use the ...

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