Poftut Blog

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How To Add A User To A Group?

In Linux users may have different groups registered. By default adding a user to the Linux system will create new user. There are different commands to change user group one of them is useradd...

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How To Delete Remove User Accounts?

How can I remove a linux user account from linux system. As you know user management in linux requires root privileges. While removing user his home directory can be remove or preserved. As same...

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How To Disable or Lock Linux User Account?

How can I disable some linux account? By disabling it I do not want to remove the account and related files. Just user related operations will be prevented. If an user authentication occures it...

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How To Add New User Account To Linux

Linux all operations are done with users. In Linux environment to create a file,  start a service, open a network port we need a user with required privileges. Linux users are stored in plain test...

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How To Disable or Enable Selinux?

I have fedora desktop. I want to run some services but I get error about selinux. How can I disable selinux? Selinux is a security mechanism used generally linux systems. It has support from...

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How To Check Java Version

Java is very popular programming language between open source community. Java is used for a lot of opensource projects. To run java applications it Java Run time Environment or Java Development Kit should be...

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How To List All Users and Groups in Linux

Users and group files are important for linux. Normal users will interact with linux systems by using credentials provided in the user ad group file. Print User File Named passwd We can get content...

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Crash Linux System With A Bash Fork Bomb

Our aim is to create a lot of process with single and simple commands.Soe every created process will eat some ram and cpu. If we loop it forever actually not forever because our system...

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