Authentication : Validating the authenticity of something or someone.
In linux system authentication means that you are a valid linux user or not. In linux when we create a user we always give a password for that user, that username and passsword is a way to check authenticity of a valid user in linux system.
There are 3 types of users in linux-
1) Super User(root)
2) System User
3) Local User
Super user or root user is automatically created when we install linux and its has administrator privileges for all services in linux system.
System user also called service user, Services like apache, ftp, printing are service accounts and these services run by there own service accounts.
Local user or regular user is a normal user, its has some necessary priviliges to perform tasks in linux like copy files, run web-browser etc.
Each user has a unique identification number. Root user has a uid 0. All system users have uid between 1-500. All normal users have uid above 500.
We all know that linux is all about files, whenever we create somnething in linux it directly affects some sort of files, so in the case of creating users also affect some configuration files: Click Here to find out what those files are and where they reside in the linux system.
In linux system authentication means that you are a valid linux user or not. In linux when we create a user we always give a password for that user, that username and passsword is a way to check authenticity of a valid user in linux system.
There are 3 types of users in linux-
1) Super User(root)
2) System User
3) Local User
Super user or root user is automatically created when we install linux and its has administrator privileges for all services in linux system.
System user also called service user, Services like apache, ftp, printing are service accounts and these services run by there own service accounts.
Local user or regular user is a normal user, its has some necessary priviliges to perform tasks in linux like copy files, run web-browser etc.
Each user has a unique identification number. Root user has a uid 0. All system users have uid between 1-500. All normal users have uid above 500.
We all know that linux is all about files, whenever we create somnething in linux it directly affects some sort of files, so in the case of creating users also affect some configuration files: Click Here to find out what those files are and where they reside in the linux system.
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