RHEL

7 Useful Linux Utilities

There are 7 useful linux utilities that you must install on new linux server. Most Linux distributions are equipped with tons of linux command utility, but if you have installed…

How to Secure OpenSSH (SSHD) on Linux

OpenSSH is a open source alternative to the proprietary Secure Shell software. It is also the SSH connectivity tools that allows you to remotely login, transfer remote file via scp…

hard disk

How to Check Disk Read Write Speed in Linux

Measuring sequential disk performance is easy in linux as every modern Linux distribution comes with a command line utility called hdparm. Hdparm is a free tool to measure sequential disk…

linux

How to Create Additional LVM on CentOS 6.3

This post will covers the steps to create additional Logical volume manager (LVM) on CentOS 6.3. This will very useful when the production system facing run out of disk space…

centos6

How to Add Webtatic Repository on CentOS 6.3

This post covers the steps on how to setup additional yum repository using Webtatic. Webtatic yum repository is a repository containing updated web-related packages for CentOS and Redhat Enterprise Linux…

Posfix

How to Check Postfix Version

This short guides shows how to quickly check your postfix mail server version. Basically, postfix is a open-source mail transfer agent (MTA) that routes and delivers electronic mail. Postfix is…