Users in Linux

In Linux platform their are 2 types of user such as System User and Normal User
System User : The user which are created default by Operating System are called system users.The function of this user to access or manange system services which cannot be utilized by normal user. The system services are Ex:shutdown,restart and application service like mail services and apache services etc..
The system users can also be recognized with the help of an UID(Unique Identifier) which starts from 0(zero) and  reserved up-to 499 by default.

Normal User: The user which are created manually by an administrator or by a system user to access system objects and resources are called normal users. Normal user can be recognized with the help of an UID(Unique Identifier) which starts from 500 and reserved up-to 60,000 by default.

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