# Day 2 : Basic Linux commands (Part-1)

### Before learning Linux commands lets talk about what is Linux?

Linux is an open-source operating system that powers many computers, servers, and devices worldwide. Imagine it as the conductor of a grand orchestra—the one who coordinates all the musicians (software programs) to play harmoniously together. Here are some key points:

1. **Open Source**: Unlike some other operating systems, Linux is like an open book. Anyone can read it, modify it, and even contribute to it. It’s like a community-driven masterpiece! 📖
    
2. **Variety of Flavors**: Linux comes in different flavors (called distributions or distros). Each distro has its own unique style and features. It’s like having a wardrobe full of different outfits for different occasions! 👗
    
3. **Command Line Magic**: In Linux, you can use special commands (typed in a terminal) to perform tasks. It’s like casting spells to make things happen. For example, `ls` shows files, and `sudo` gives you superpowers! 🧙‍♂️
    
4. **Stability and Security**: Linux is like a sturdy castle—it’s reliable and secure. It’s used in servers, smartphones, and even space missions! 🏰
    
5. **Community Love**: Linux enthusiasts are passionate and supportive. It’s like being part of a global family where everyone helps each other out! 🤗
    

### Let's learn some basic commands in Linux.

1. `ls`**:** List directories. *Example:* `ls -l` lists files in a detailed format.
    
2. `pwd`: Print working directory. *Example*: `pwd` shows the current directory path.
    
3. `cd`: Navigate through directories. *Example*: `cd /path/to/directory` changes to the specified directory.
    
4. `mkdir`: Create directories. *Example*: `mkdir my_folder` makes a new folder named “my\_folder.”
    
5. `mv`: Move or rename files. *Example:* `mv file.txt new_location/` moves the file to a different location.
    
6. `cp`: Copy files. *Example*: `cp file.txt backup/` makes a copy of the file in the “backup” folder.
    
7. `rm`: Delete files or directories. *Example:* `rm file.txt` removes the file.
    
8. `touch`: Create blank files. *Example:* `touch new_file.txt` makes an empty file.
    
9. `ln`: Create symbolic links (shortcuts). *Example*: `ln -s target_file link_name` creates a symbolic link.
    
10. `clear`: Clear the terminal display. *Example*: `clear` removes previous output.
    
11. `cat`: Show file contents. *Example*: `cat file.txt` displays what's inside “file.txt.”
    
12. `echo`: Print text. *Example*: `echo "Hello, World!"` prints the text you type.
    
13. `less`: View large files page by page. *Example*: `less large_file.txt` lets you scroll through big files.
    
14. `man`: Read the manual for commands. *Example*: `man ls` shows the manual for the `ls` command.
    
15. `uname`: Get basic OS info. *Example*: `uname -a` shows system details.
    
16. `whoami`: Find out your username. *Example*: `whoami` tells you the current user.
    
17. `tar`: Compress or extract files. *Example*: `tar -cvf archive.tar files/` creates a tar archive.
    
18. `grep`: Search for text in files. *Example*: `grep "pattern" file.txt` finds lines with the pattern.
    
19. `head`: Show the top lines of a file. *Example*: `head -n 10 file.txt` displays the first 10 lines.
    
20. `tail`: Show the bottom lines of a file. *Example*: `tail -n 5 file.txt` shows the last 5 lines.
    

### Watch this video to learn more Linux commands. 🐧

%[https://youtu.be/gd7BXuUQ91w?si=zQdw3-wHc-_4ITBP] 

Thank you for reading😉.