Introduction to Linux

Linux is a kernel created by Linus Torvalds and Contributors. Linux was first released on September 17, 1991.

The main advantage of Linux is that its source code is written in c language and distributed under an open-source license, Which means programmers can use the Linux Kernel to design their own custom operating systems. As a result, there are many variants of Linux distribution are available, they are populate known as distros.

Some of the most popular operating systems that use Linux as a kernel are Debian, Knoppix, Ubuntu, and Fedora. Nevertheless, the list does not end here as there are thousands of OSs based on Linux which offer a variety of functions to the users.

Introduction to Linux System Administration

Linux is a major strength in computing technology most the web server, mobile phones, personal computers, supercomputers, and cloud servers are powered by Linux. The job of a Linux systems administrator is to manage the operations of a computer system like maintaining, enhancing, creating user accounts/reports, and taking backups using Linux tools and command-line interface tools. most computing devices are powered by Linux because of its high stability, high security, and open-source environment. there are some of the things a Linux system administration should know and understand:

• Linux file systems
• File system hierarchy
• Managing Root/super user
• Basic Bash command
• Handling files, directories, and users

Duties Of A Linux Administrator

System Administration has become a solid criterion for an organization and institute that requires a solid IT foundation. Hence, the need for efficient Linux administrators is the requirement of time. The job profile might change from each organization as there may be added responsibilities and duties to the role. Here are some of the duties of a senior Linux administrator:

• Maintain all internet requests inclusive to DNS, RADIUS, Apache, MySQL, and PHP.
• Taking regular backup of data, creating new stored procedures, and listing backup are one of the duties.
• Analyzing all error logs and fixing them along with providing excellent customer support for Webhosting, ISP, and LAN Customers on troubleshooting increased support troubles.
• Communicating with the staff, vendors, and customers in a cultivated, professional manner at all times has to be one of his characteristics.
• Maintain, enhance and create tools for the Linux environment and its users.
• Identify and resolve service problems ranging from disaster recovery to login problems.
• Installing the necessary systems and security tools. He works with the Data Network Engineer and other personnel/departments to analyze hardware requirements and makes acquiring recommendations.
• Troubleshoot, when the problem occurs in the server.

Steps to Start Your Linux System Admin Career

• Install and learn to use the Linux environment
• Get Certified in Linux administration
• Learn to do Documentation
• Joining up with a local Linux Users Group or Community for support and help.

Best Linux online courses/training

• Linux for Beginners By Udemy
• Learn Linux in 5 Days and Level Up Your Career
• Linux Tutorials and Projects (Free)
• System Administration by linuxfoundation
• Open Source Software Development, Linux and Git Specialization
• Red Hat System Administration I By Red Hat

In short, the main role of the Linux Systems Administrator is to manage the operations like installing and observing the software and hardware systems. And also they should have good communication and an in-depth understanding of Linux. Even freshman-level Professionals have great possibilities for the position of System Administrator with the yearly median salary is around INR 2.4 Lakhs to 7.2 Lakhs, and salary increase with an increase in job experience.