Day 6: Journey into the Linux File System - Navigating the Core of DevOps 🚀📂

Welcome back to Day 6 of the 90 Days DevOps Challenge! Today's adventure takes us deep into the heart of Linux as we unravel the mysteries of its file system hierarchy. Understanding the Linux file system is crucial for any aspiring DevOps engineer, as it forms the backbone of system administration and configuration. So, let's roll up our sleeves and dive into the fascinating world of Linux directories and files! 💻🔍

Navigating the Linux File System:

At the core of every Linux system lies the root directory /, serving as the starting point for all file system paths. From here, directories branch out, each serving a unique purpose in organizing files and data. Here are some key directories you'll encounter:

1. /bin (Binary): 📦

   • Houses essential binary executables required for system boot and operation.

   • Commands like ls, cp, and mkdir are found here.

2. /sbin (System Binary): 🛠️

   • Stores binary executables used by the system administrator for system administration tasks.

   • Utilities like ifconfig, iptables, and fdisk reside here.

3. /etc (Etcetera): ⚙️

   • Contains system-wide configuration files for various applications and services.

   • Configuration files for networking, user authentication, and system settings are stored here.

4. /home: 🏠

   • Houses user home directories, providing a personal space for each user.

   • Users store their files, documents, and personal configurations within their home directories.

5. /root :

   Its a home directory for root user in linux system.

6. /usr (Unix System Resources): 📚

   • Stores user binaries, libraries, documentation, and source code.

   • Binaries installed by the system package manager, along with associated files, reside here.

7. /var (Variable): 🔄

   • Contains variable data such as logs, temporary files, and system spools.

   • Log files, mail queues, and cached data are commonly found here.

8. /tmp (Temporary): 🗑️

   • Provides temporary storage for files that are only needed for a short period.

   • Temporary files created by applications and users are stored here and are typically cleared on system reboot.

Basic File System Operations:

To navigate the file system and interact with files and directories, we use various commands:

• Navigating Directories: Use the cd command followed by the directory name to navigate. For example, cd /usr/bin moves you to the /usr/bin directory.

• Listing Directory Contents: Use the ls command to list directory contents. Adding the -l flag provides detailed information about files and directories.

• Creating Directories: Use the mkdir command followed by the directory name to create a new directory. For example, mkdir projects creates a directory named projects.

• Creating Files: Use the touch command followed by the file name to create a new file. For example, touch example.txt creates a file named example.txt.

Conclusion:

Congratulations on completing Day 6 of the 90 Days DevOps Challenge! Today, we've embarked on a journey through the Linux file system, uncovering its secrets and learning how to navigate its directories and files. By mastering these fundamentals, you're building a solid foundation for your DevOps journey. Keep up the great work, and stay tuned for more exciting challenges ahead! 🎉🐧#HappyLearning #90DaysOfDevopsChallenge