What is GRUB boot Loader ?
On a Red Hat Linux system, the boot loader's function is to locate the Linux Kernel, and any other necessary files, and load them into memory. It then starts the kernel so that the kernel
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Step by step tutorial to configure BIND-9.8 DNS server in Red Hat Linux
In my earlier post I had shown you the step by step configuration guide for BIND DNS server but since that time I had used older version of bind rpm so most of the parameters
Existing lock /var/run/yum.pid: another copy is running
This is a very common error which you might come across in Red Hat Linux distro while trying to run yum command Error: # yum install bind Loaded plugins: fastestmirror, refresh-packagekit, security Existing lock /var/run/yum.pid:
How to configure a caching only bind DNS server in Red Hat Linux
caching-only nameserver won't allow references to internal clients by hostname, but it does allow clients to take advantage of frequently requested domains that are cached. Pre-requisites Make sure all the below packages are installed bind
Iptables rules to allow/block ssh incoming/outgoing connection in Linux
Let me show you some iptable rules which can be used to allow or block ssh connection from a specific host or network Block 192.168.1.10 from connecting your localhost 192.168.1.6 [root@test1 ~]# iptables -I INPUT
Iptables rules to block/allow icmp ping request in Linux
In this article I will show you different ways to block or allow incoming and outgoing icmp ping request in your Linux server. Block ICMP ping request from all the servers in my network 192.168.1.0/24
How to configure Private Network in VMware Workstation
It is crucial to know your IP address, as most of the people want to check for security reasons, while others want to build backlinks. Even some of them look for their IP address to
10 examples to help you understand top command usage in Unix/Linux
Follow below link to get a step by step illustration to permanently add or remove extra columns to top command ouput with examples How to reduce and/or add more columns or fields to top command