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Day 2 Linux Fundamentals and Architecture

Day 2 Linux Fundamentals and Architecture

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muhammad zubair
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4 min read

Understanding the Linux architecture is crucial for a comprehensive grasp of its functionality. It operates from the top down, encompassing various layers:

  1. Application:

    • Description: This is where user-facing software runs and interacts.

  2. Shell:

    • Description: The interface through which users interact with the system, executing commands.

  3. Kernel:

    • Description: The core component managing hardware resources and providing essential services.

  4. Hardware:

    • Description: The physical machinery that Linux operates on.

Global Infrastructure and AWS Billing:

Managing AWS billing involves understanding the global infrastructure, including regions and availability zones, which play a pivotal role. AWS offers a comprehensive overview of their infrastructure at: Global Infrastructure Overview.

Favorite AWS Region - North Virginia:

  • Description: Among the available regions, North Virginia stands out as a personal favorite due to its merits and offerings.

EC2 (Elastic Compute Cloud) Setup:

Setting up an EC2 instance involves a step-by-step process:

  1. Login:

    • Description: Access your AWS account and select your preferred region.

  2. Launch Instance:

    • Description: Search and choose your instance name. Select the operating system and architecture, such as 64bit (x86) or 64bit (arm), making use of the 1-year free tier with 1,000 hours of usage, preferably on a t2.micro instance.

  3. Key Pair:

    • Description: Provide a name for your key pair, choose RSA as the encryption type (utilizing RSA encryption keys), and generate a key pair file in the .pem format, widely used in the Linux ecosystem for enhanced career prospects.

  4. Network Settings:

    • Description: Establish a security group to allow essential traffic, such as SSH, HTTPS, and HTTP.

By following these steps, you will successfully create a launch instance, resulting in a fully operational machine image tailored to your requirements.

Title: Mastering Basic Linux Commands: A Comprehensive Guide

Introduction:

  • Briefly introduce the importance of command-line skills in Linux.

  • Highlight the efficiency and versatility of using the terminal.

  • Set the tone for the article as an essential resource for beginners.

Section 1: Getting Started with the Terminal

1.1 The Terminal Interface

  • Introduce the terminal and its significance in Linux.

  • Explain how to open the terminal on different Linux distributions.

  • Discuss the terminal prompt and its meaning.

Section 2: Navigating the File System

2.1 pwd and ls

  • Explain the pwd command to print the current working directory.

  • Describe the ls command for listing files and directories.

  • Introduce common options like -l, -a, and -h.

2.2 cd and mkdir

  • Explain how to change directories using cd.

  • Describe creating new directories with the mkdir command.

Section 3: Working with Files

3.1 Creating and Touching Files

  • Describe how to create new files using touch.

  • Explain the purpose of echo for writing content to files.

3.2 Viewing File Content

  • Introduce cat, more, and less for displaying file content.

  • Highlight their differences and interactive features.

3.3 Copying, Moving, and Renaming

  • Describe the cp command for copying files and directories.

  • Explain how to use mv to move and rename files.

3.4 Removing Files and Directories

  • Introduce the rm command for deleting files and directories.

  • Emphasize caution and introduce the -r and -f options.

Section 4: Searching and Filtering

4.1 Searching with grep

  • Explain how to use grep to search for patterns in files.

  • Provide examples of basic usage and options.

Section 5: System Monitoring and Management

5.1 Viewing Running Processes

  • Introduce the ps command to list running processes.

  • Explain the aux option for detailed process information.

5.2 Terminating Processes

  • Describe how to use the kill command to terminate processes.

Section 6: Disk Usage and Management

6.1 Checking Disk Space

  • Introduce the df command for checking disk space usage.

  • Describe the -h option for human-readable sizes.

6.2 Checking Folder Sizes

  • Explain how to use the du command to check sizes of files and folders.

  • Discuss the -h option for human-readable sizes.

Section 7: Additional Resources

7.1 Using the Manual

  • Explain how to access command documentation using man.

  • Encourage readers to explore more commands and options.

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