Most of the Linux operating systems comes with pre-installed OpenJDK package to run java-based applications and plugins. Now, you’re thinking if Java already ships with OS, why we need to install it again?. Yes! right good question, but in certain cases we need Sun/Oracle Java program to compile and run particular development applications. This is the reason we are compiling this article on how to install Sun/Oracle Java JDK /JRE 6 on RHEL 6.3/6.2/6.1/6/5.8,.....

In our previous article, we have seen 20 Netstat Commands to monitor or mange Linux network. This is our another ongoing series of packet sniffer tool called tcpdump. Here, we are going to show you how to install tcpdump and then we discuss and cover some useful commands with their practical examples.tcpdump is a most powerful and widely used command-line packets sniffer or package analyzer tool which is used to capture or filter TCP/IP packets.....

RAR is most popular tool for creating and extracting compressed archive (.rar) files. When we download a archive files from the web, we required a rar tool to extract them. RAR is available freely under Windows operating systems to handle compressed files, but unfortunately rar tool doesn’t pre-installed under Linux systems, we need to install it using third-party tools to open, extract, uncompress or unrar a archive files.The guide explains.....

In our earlier web-server guides we’ve shown you how we’ve installed Apache with MySQL 5 and PHP5 and Nginx with MySQL5 and PHP5 (PHP-FPM). Here, in this tutorial we’ll show you how to install Lighttpd with MySQL 5 and PHP 5 (PHP-FPM) support on a RHEL/CentOS 6.3/5.8 systems. We do not issue any guarantee that it will work for you as it worked for us. Before heading up to installation, We would like to give a little about Lighttpd.....

Wireshark is a open source and freely available network analyzer tool which is shipped with most of the Linux distributions now a days. Also wireshark runs on various Unix-like operating systems i.e Mac OS X, BSD, Solaris including Windows OS as well. Wireshark is very similar to tcpdump, but has a graphical front-end, plus great filtering and sorting options are integrated within. Here, we are installing wireshark using YUM Commands in our RHEL 6.3.....

In our last article we have showed you the most used 8 Nslookup commands with their examples, now here we come with another command line tool called Dig, which is much similar to Linux Nslookup tool. We will see the usage of dig command closely with their examples as shown below.Dig stands for (Domain Information Groper) is a network administration command-line tool for querying Domain Name System (DNS) name servers. It is useful for verifying and.....

nslookup is a command-line administrative tool for testing and troubleshooting DNS servers (Domain Name Server). It is used to query specific DNS resource records (RR) as well. Most operating systems comes with built-in nslookup feature.This article demonstrates widely used nslookup command in detail. Nslookup can be run in two modes: Interactive and Non-Interactive. The Interactive mode is used to query DNS-Server about various domains and hosts......

In this article, we will learn how to install, update, remove, find packages, manage packages and repositories on Linux systems using YUM (Yellowdog Updater Modified) tool developed by RedHat. The example commands shown in this article are practically tested on our CentOS 6.3 server, you can use these material for study purpose, certifications or just to explore ways to install new packages and keep your system up-to-date. The basic requirement of.....