How to Change RunLevel on CentOS 7 / RHEL 7

Old method to change the runlevel via /etc/inittab in Redhat Enterprise Linux version and CentOS server has become obsolete on RHEL 7 and CentOS 7. This latest Linux operating system uses systemd system management daemon and relies on systemctl command in order to change the runlevel. RunLevel is set with linking to /etc/systemd/system/default.target. Please make […]

How to Install JAVA 8 (JDK 8u45) on CentOS 6 / CentOS 7

The JDK is a development tool for building applications, applets, and components using the Java programming language . It includes a useful tool for developing and testing programs written in the Java programming language and runs on the Java platform. You can go through this document to know more about new enhancement of Java JDK […]

How to Install IonCube Loader in CentOS 6 / CentOS 7

What is IonCube Loader ? IonCube Loader is a PHP module or extension for PHP files decoding encrypted and is often required for many applications based on PHP. It helps us to protect php applications from unauthorized execution and at the same time can accelerate the website. This article will show you how you can […]

How To Get Email Alerts for SSH Login on Linux Server

Enable SSH server on a virtual private server (VPS) will expose the server to the internet and provide opportunities for hacking activities, especially when VPS still using root as a primary access. VPS should be configured with a email alert automatically to each successful login attempts via SSH server . VPS server owner shall be […]

How to Disabled SELinux using Command Line on CentOS 6/RHEL 6

In this short article, I’ll show you an easy way to disable SELinux in RHEL or CentOS 6 6. You only need to run the following command line. After that, make sure you reboot your CentOS server for changes to take effect. 1. Verify the SELINUX setting before changes : [root@centos66 ~]# sestatus SELinux status: […]

How to use tmpwatch to Auto Clean Up Files and Logs in Linux

Tmpwatch is tools that recursively removes files which have not been used or accessed for certain period of time. In this post, i will describe how we can automate the clean up process on log directory on linux CentOS 6.6. You can use tmpwatch to safely remove unwanted files for a given time. 1. How […]

How to Check Opened Port on Linux VPS Server

By default, the linux operating system manages 65536 ports. If you run Virtual private Server (VPS) on linux platform, it is better to turn off any services or ports that you don’t actually need. This is to ensure your VPS server will not become avenues of attack for any security threats. Simply run these commands […]

How to Check VPS Network Speed

Several important factors to consider before buying a Virtual Private Server (VPS) are Internet connection speed, I/O speed, CPU performance and the server or network uptime. Actually, you can get a complete comparison about the VPS performance at serverbear.com websites, but if you want a second opinion on how fast is your connection speed VPS, […]

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