How to change DNS ip address in RHEL (Red Hat Enterprise Linux)

You can change the DNS IP address in Red Hat Enterprise Linux by editing the network configuration file. Here’s how: Open the network configuration file: sudo nano /etc/sysconfig/network-scripts/ifcfg-<interface> where <interface> is the name of your network interface (e.g. eth0). Modify the DNS line to the desired IP address, e.g.: DNS1=8.8.8.8 Save the file and exit … Read more

RHEL / Centos 6 – Install Nginx Using Yum Command

To install Nginx on Red Hat Enterprise Linux (RHEL) 6 or CentOS 6 using the yum command, you need to add the Nginx repository to your system. Here are the steps: Download and install the Nginx repository configuration: sudo rpm -Uvh http://nginx.org/packages/centos/6/noarch/RPMS/nginx-release-centos-6-0.el6.ngx.noarch.rpm Update the package lists: sudo yum update Install Nginx: sudo yum install nginx … Read more

Debian / Ubuntu Linux: Install GTK 2+ Development Environment

To install the GTK 2+ development environment on Debian or Ubuntu Linux, you can use the following steps: Update your package lists: sudo apt-get update Install the GTK 2+ development packages: sudo apt-get install libgtk2.0-dev This will install the GTK 2+ development environment on your system, including the headers, libraries, and tools required for developing … Read more

How To Look Up DNS on a Linux and Unix Systems

There are several ways to look up DNS information on a Linux and Unix system, including using the “nslookup” and “dig” commands. “nslookup” command: The “nslookup” command is a simple tool for looking up information about a domain name, such as its IP address. To use the “nslookup” command, open a terminal window and enter … Read more

Linux / Unix: fg Command Examples

The “fg” command in Linux and Unix is used to bring a background job to the foreground. This allows you to interact with the job as if it were a foreground job, rather than running in the background. Here are some examples of how to use the “fg” command: To bring the most recent background … Read more

Linux / Unix: killall Command Examples

The “killall” command in Linux and Unix is used to kill processes by name. It sends a signal to all processes running the specified command name. Here are some examples of how to use the “killall” command: To kill a process by name, use the following command: killall <processname> Replace “<processname>” with the name of … Read more