Understanding the Linux Inode
An inode in Linux is a file structure that holds data about a file. In Linux, everything is treated as a file. This includes directories and devices such as keyboard,…
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Commands to check memory usage in Linux
Having sufficient physical memory (RAM) on your system is critical for processes to run efficiently. Once the memory runs out, your system will start using the swap space and this…
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Configuring date and time in RHEL 7/Centos 7
Knowing how to manage time via the command line is a useful skill to acquire. To best understand time, we need to understand the two types of clocks specified in…
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How to Disable SELinux in CentOS
Security-Enhanced Linux is a Linux kernel security module that provides a mechanism for supporting access control security policies, including mandatory access controls. It offers a means of executing some security…
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How to configure WebDav with Apache on CentOS
WebDAV stands for Web-based Distributed Authoring and Versioning. It is an extension of the HTTP protocol that allows users to edit and manage documents and files stored on web servers….
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How to configure static IP addresses in CentOS 6
CentOS 6 minimal by default does not come with the network pre-configured. In this guide, we will be showing you how to set a static IP address in CentOS 6…
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Opening and Closing Ports in CentOS 6 and 7 using IPtables
Setting up a good firewall is an essential step in ensuring the security of your system. IPtables is the default firewall used on CentOS. It is a command-line utility that…
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How to create a Web server using Nginx on Centos 7
In our project, the web server will be running on Nginx. Of course Apache is another great web server, but here, I’ll use Nginx v1.12.2. If you’d like the Apache…
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How to add a user to Sudoers in CentOS
Sudo is a command line program that allows an ordinary user to execute commands that require superuser privileges. Running your system as a non-root user is good practice for a…
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How to remove MySQL from your CentOS system
When doing an installation of a specific version of MySQL on your CentOS machine, you may get errors caused by the previous MySQL that had been installed earlier; probably a…
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