Linux

Overview Of Linux

 

Linux is a free and open-source operating system based on the Unix operating system. It was created by Linus Torvalds in 1991 and has since become a popular operating system used by individuals and organizations worldwide. Here is an overview of Linux:

  1. Open Source
  • Linux is an open-source operating system, which means that the source code is available for anyone to view, modify, and distribute.
  1. Free
  • Linux is free to use and distribute. There are no licensing fees or costs associated with using Linux.
  1. Flexibility
  • Linux is highly customizable, and users can modify and configure the operating system to suit their specific needs.
  1. Security
  • Linux is generally considered to be a more secure operating system compared to other operating systems. It is less vulnerable to viruses and malware due to its architecture and permissions model.
  1. Command Line Interface
  • Linux has a command-line interface (CLI), which provides users with powerful tools for system management, automation, and scripting.
  1. Multitasking
  • Linux is designed to handle multiple processes and users simultaneously, making it a popular choice for servers and other systems that require high levels of uptime and availability.
  1. Compatibility
  • Linux is compatible with a wide range of hardware and software, making it a popular choice for developers and other technical users.
  1. Distributions
  • Linux comes in many different distributions, each with its own unique features, tools, and interface. Some popular Linux distributions include Ubuntu, Fedora, Debian, and CentOS.

Benefits of learning Linux

 

  1. Career opportunities: Linux is used in many industries, including technology, finance, healthcare, and government. Learning Linux can open up career opportunities in fields such as system administration, DevOps, and software development.
  2. Flexibility and customization: Linux is highly customizable, allowing users to modify and configure the operating system to suit their specific needs. This makes Linux a popular choice among developers, system administrators, and other technical users.
  3. Security: Linux is generally considered to be a more secure operating system compared to other operating systems. Its architecture and permissions model make it less vulnerable to viruses and malware.
  4. Command-line interface: Linux has a powerful command-line interface (CLI), which provides users with powerful tools for system management, automation, and scripting.
  5. Compatibility: Linux is compatible with a wide range of hardware and software, making it a popular choice for developers and other technical users.
  6. Community support: Linux has a large and active community of developers and users who contribute to the development of the operating system, provide support, and share knowledge and resources.
  7. Cost savings: Linux is an open-source operating system that is free to use and distribute. This means that users can modify and customize Linux to suit their specific needs without having to pay licensing fees or costs.

Job roles in Linux

 

  1. Linux System Administrator
  2. Linux DevOps Engineer
  3. Linux Network Administrator
  4. Linux Security Specialist
  5. Linux Cloud Administrator
  6. Linux Technical Support Specialist

Linux Course Content

RH124 – Red Hat System Administration – I

 

  1. Introduction to the command line interface:
  • Understanding the command line interface
  • Basic shell commands
  • Running commands with sudo
  1. Getting started with Red Hat Enterprise Linux:
  • Installing Red Hat Enterprise Linux
  • Registering your system
  • Understanding the file system layout
  1. User and group management:
  • Creating and managing users and groups
  • Understanding file ownership and permissions
  • Creating and managing file and directory permissions
  1. Networking:
  • Configuring network interfaces
  • Troubleshooting network connectivity
  • Configuring DNS resolution
  1. File systems and storage:
  • Understanding file systems and storage devices
  • Creating and managing partitions and file systems
  • Mounting and unmounting file systems
  1. Managing processes:
  • Understanding processes and process management
  • Monitoring and controlling processes
  • Scheduling processes
  1. Package management:
  • Installing and managing software packages
  • Configuring software repositories
  • Updating the system with the latest patches and updates
  1. Basic system administration:
  • Understanding system logs and log management
  • Managing system services and daemons
  • Configuring system time and date

RH134 – Red Hat System Administration – II

  1. Introduction to the command line interface:
  • Review of basic shell commands
  • Running commands with sudo
  • Using pipes and redirection
  1. Accessing the command line:
  • Using virtual consoles and remote access
  • Configuring remote access with SSH
  1. Managing files:
  • Managing files with ACLs and SELinux
  • Using tar, gzip, and zip for file compression
  • Managing file systems and storage devices
  1. Managing user accounts:
  • Understanding user accounts and authentication
  • Managing user accounts with Identity Management
  • Configuring password policies
  1. Managing software:
  • Using the YUM package manager for software installation and updates
  • Managing software with RPM
  • Understanding software dependencies
  1. Network configuration:
  • Configuring network interfaces and settings
  • Troubleshooting network connectivity
  • Configuring firewalls and SELinux
  1. System performance:
  • Understanding system performance and monitoring tools
  • Managing system resources with control groups (cgroups)
  • Tuning system performance with system profiles
  1. Managing processes:
  • Understanding process management
  • Monitoring and controlling processes with systemd
  • Scheduling processes with cron and at
  1. Bash scripting:
  • Understanding shell scripting basics
  • Creating basic shell scripts
  • Running and debugging shell scripts
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