Introduction
Welcome
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What you should know
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Get help with commands
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Reconfigure or migrate CentOS
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1. Linux User Authentication
User and group overview
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User account file
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User password file
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Group accounts and password files
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About Pluggable Authentication Modules
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2. Account Policies
Check password hash algorithms
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Test password strength
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Set default password policies
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Edit global account defaults
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Configure user account aging
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3. Users, Groups, and Passwords
Create and delete users
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Modify user accounts
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Create and delete groups
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Assign users to groups
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Lock accounts and passwords
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Force password resets
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4. Elevating Privileges
Become the super user
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Elevate group privileges
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Elevate privileges using sudo
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Manage sudo users
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