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…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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…