Complete Guide: How to install Nagios Monitoring on AlmaLinux / Rocky Linux
In this article, learn how to install Nagios core monitoring tool on AlmaLinux and Rocky Linux.
Search Results for: linux
Learn Linux
We are glad that you want to learn Linux and visited this page. Currently the Linux is one of the best Operating System in current modern time. From end user to big corporate business, low end to high end devices, Linux has made its footprints every where. Around the world there are many Linux users,…
Understanding Linux Internal vs External Commands
Do you know when you run the Linux / Unix command it could be Internal or External ? In this article, we will learn about Linux Internal and External command. For identifying and understand on command type, here we have article for you. Linux/Unix has so many commands. If you know these commands, your Linux…
Essential Linux Commands Every Beginner Should Know | With Examples
In this Linux tutorial post, we are writing on all Linux basic commands with examples which every Linux beginner should know. It will help you to kickstart on any Linux Operating System. We expect, you have already installed the Linux Operating System in your system and we are ready to start the command in terminal….
How to install Java (OpenJDK) on Ubuntu Linux
Java is a class based, object oriented programming language. It is cross platform and widely use in developing applications. The Java was first developed in Sun Microsystem (Now acquired by Oracle). In this post, to install Java we will use the OpenJDK package. OpenJDK is a free and open source product implements Java SE which…
How to Disable selinux in Red Hat or CentOS
In this post, learn how to disable selinux in Red Hat and CentOS Operating System. Security-Enhanced Linux (SELinux) is a Linux feature that provides the mechanism for supporting access control security policies. How to check the status of SELINUX in linux system Use the given below command to check SELINUX status getenforce Open the file…
Install and setup maven in Linux for Jenkins
In this post we will guide to install and setup Apache Maven in Linux system. The same Apache Maven you can also use in Jenkins for building Java projects. The steps written in this article are generic and you can follow the same steps in almost all Linux distros. What is Apache Maven Apache Maven…
How to install terraform in Linux : CentOS / Ubuntu
Learn how to install terraform in Ubuntu, Debian, CentOS, Red Hat and Rocky Linux. Terraform is popular Infrastructure As Code tool and widely used in DevOps practice.
print new line character in Unix / Linux
This is quick post on print new line character in Unix / Linux. Here, we will share two methods of print / echo new line character. Generally , when we do bash/shell scripting most of the time we require this. Let’s start this essential basic of bash/shell scripting. echo command : new line character In…
Centralize authorized_keys file on Linux / Unix system
Authorized_keys are important files which has the information of public keys for public key authentication. By default location is ~/.ssh/authorized_keys. Here, ~ is users default home directory in system. While working on SSH, we got requirement to centralize the authorized_keys of all users existing in system. In most of the system for SSH we use…
Cassandra backup script on linux system
In this post we are sharing the Cassandra backup script on linux system. Backup is always important part of any system. Backup will help you to get the data back in case data is removed due to some reason. The script includes two section as per the Cassandra backup requirement. These are given below 1….
2 Methods to remove CONTROL-M characters from a file in Linux/Unix
Whenever we transfer the files from Windows to Linux / Unix system generally it has CONTROL-M character inside. Which appears as ^M inside the files . To prevent this you can first copy paste the content in notepad then again copy to file in linux system. Here, notepad will help you to transfer the ASCII character.
Find Linux Operating System architecture installed on system
In this post we will quickly share the commands, which will help to find linux operating system architecture installed on system. Most of the time system admin or linux user requires to know which Linux OS architecture is installed. Mostly , while installing or developing the package or software we need this information. Whereas it…
CentOS 7 / RHEL 7 : change OpenSSH port number ( SELINUX enabled )
The tutorial will explain about how to change default ssh port number in OpenSSH Server on CentOS 7 and RHEL 7 . We will change the SSH default port no. 22 to our desired number and we will keep SELINUX enabled. We will also add new firewalld rule with respect to new ssh port number….
netstat command not found on CentOS 7 and RHEL 7 (Red Hat Enterprise Linux 7)
We have observed many new changes on Red Hat Enterprise Linux and CentOS 7 . With the previous RHEL and CentOS version, netstat command was available even in minimal installation. On CentOS 7 and RHEL 7, on doing minimal installation we have not found netstat command. To get the netstat command on RHEL 7 and…