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 Grant a New User to Root Privileges on CentOS 6 / CentOS 7

One recommended way to manage virtual private server (VPS) or a dedicated linux server is not using the root account as the main access for SSH login. This is because usually the hackers will try to brute force your root password and potentially get access to your server. Instead of using the default root account, […]

How to Add Linux Swap Space on CentOS 6 VPS

I have a virtual private server (VPS) and plans to run a WordPress blog in it. A limited amount of RAM and swap size will be an issue because some software applications like MySQL, Apache, NGINX, PHP, HHVM and Varnish requires more memory to operate. From my past experience in Ubiquity Hosting and Linode, the […]

How to Remove/Uninstall Nginx Installed from Source on CentOS 6/RHEL 6

On this day, Nginx web server is reported to be a most popular and fastest in the internet if installed properly. But it should always be updated from time to time in order to maintain stability and high security so that is not exposed to hackers. For system administrators and web masters, it is routine […]

New Naming Scheme for the Network Interface on RHEL 7/CentOS 7

Red Hat Enterprise Linux 7 (RHEL 7) and CentOS 7 come with the new naming scheme for the network devices. These features change the name of network interfaces on a system in order to make the network interfaces fully predictable, fully automatic, easier to differentiate and that broken hardware can be replaced seamlessly. This affects […]

Ldapsearch Examples for 389 Directory

This post will show you the list of ldapsearch examples for 389 Directory. This ldapsearch examples assumes the following: a)This ldapsearch is search for uid in the directory. b)The 389 directory is configured to not support anonymous access, then the user “Directory Manager” and the password is required c)This ldapsearch command has been run on […]

How to Change Timezone Linux on RHEL 6/7 and CentOS 6/7

This post assumed that we will change the System Timezone from the command line without using redhat-config-date. There are several files and directories that are used for time zones. In RHEL 6 and RHEL 6, there is one directory that very useful to select the appropriate time zone which is /usr/share/zoneinfo directory. Sometimes we forget […]

How to Mount CDROM Media on CentOS 5/CentOS 6/CentOS 7

Question : How to mount CDROM/DVDROM media on linux CentOS server ? Solution : In certain situations, system administrators will need to mount cdrom containing the installer or data on linux CentOS or RHEL. Once cdrom mounted, they can access the data in the media discs directly. For reference, here is the easy way to […]

How to Install tcpdump on CentOS 5/CentOS 6/RHEL 5/RHEL 6

Tcpdump is a packet sniffer that able to capture traffic that passes through a machine. It operates on a packet level, meaning that it captures the actual packets that fly in and out of your computer. It can save the packets into a file. In this post, i will show how to install tcpdump on […]

Why “portmap unrecognized service” on RHEL 6/CentOS 6

Question : During the deployment of Samba and NFS services on one of the RHEL 6 server, I’m hit by this message when trying to start, stop and restart service portmap : [root@rhel6 ~]# service portmap start portmap: unrecognized service   Answer : Portmap is replaced by rpcbind on some linux distributions such as Fedora […]

How to Setup Local Yum Repository from CD-ROM/DVD-ROM image on RHEL 6

In this article, I will share about how to update and install RPM packages from the image CD-ROM/DVD-ROM in Red Hat Enterprise Linux 6 (RHEL 6). This step can also be used on CentOS 6 or older versions such as CentOS 5. It would be very useful if the server you have a slow internet […]

How to Add User to root Group on CentOS 5/CentOS 6

useradd is a low-level utility to create new users to the system. When used without the -D option, useradd command will create a new user account using the command line plus the default values ??of the system. Depending on the command line option, useradd command will update system files and also can create new user’s […]

SiteGround.com

A world leading hosting company that provides fully-managed innovative and secure solutions, suitable for hosting small to medium-sized websites

Built on the best available technologies combined with Google Cloud for strong redundancy and application availability. Backed by skilled experts to address web security threats, a devops team to create advanced custom security solutions, and 24/7 sysadmins to watch over the platform. This powerful, hands-on approach makes your sites faster, safer, and easier to manage. Starting from only $3.95/mo.

TRY FREE

* up to 30 days money back guarantee