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User Accounts


As a Linux system administrator you'll have to know how to manage user accounts. User account management involves creating, modifying and deleting user accounts, setting up and modifying users' system privileges, the ever-popular chore of changing forgetful users' passwords, etc. User accounts (i.e., accounts used by human beings) aren't the only accounts on your Linux system. The accounts with UIDs (User IDentification) from 0 through a certain system-dependent number (e.g., 99, 499) are reserved for the root user and for system processes that run under their own UIDs (instead of running as root, which is a security risk). You don't want to delete or modify these accounts unless you know what you're doing.

1. User accounts


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