Introduction

The Command Line Interface (CLI) is a text-based interface used to interact with the operating system and various software. Unlike the Graphical User Interface (GUI), which relies on visual elements like icons and windows, the CLI uses typed commands to perform tasks.

Why Use CLI?

Efficiency: - Commands can perform complex tasks more quickly than navigating through menus.
Automation: Scripts can automate repetitive tasks.
Resource-Friendly: CLI consumes fewer system resources compared to GUI.
Remote Access: CLI is essential for managing remote servers.

Basic Commands

Navigating the Filesystem
- pwd: Print the current working directory.
```
  pwd
```
- ls: List files and directories.
```
  ls
```
- cd: Change directory.
```
  cd /path/to/directory
```
- mkdir: Create a new directory.
```
  mkdir new_directory
```
- rmdir: Remove an empty directory.
```
  rmdir empty_directory
```

File Operations

touch: Create an empty file.
```
  touch newfile.txt
```
cat: Concatenate and display file content.
```
  cat file.txt
```

cp: Copy files or directories.

  cp sourcefile.txt destinationfile.txt
  cp -r sourcedir/ destinationdir/

mv: Move or rename files or directories.

  mv oldname.txt newname.txt
  mv file.txt /path/to/destination/

rm: Remove files or directories.
```
  rm file.txt
  rm -r directory/
```

Text Manipulation

echo: Display a line of text.
```
  echo "Hello, World!"
```
grep: Search for patterns in text.
```
  grep "pattern" file.txt
```
sed: Stream editor for modifying text.
```
  sed 's/oldtext/newtext/' file.txt
```

Advanced Features

Piping and Redirection
- | (pipe): Pass the output of one command as input to another.
```
  ls | grep "pattern"
```
- >: Redirect output to a file.
```
  echo "Hello, World!" > output.txt
```
- >>: Append output to a file.
```
  echo "Append this text" >> output.txt
```
- <: Redirect input from a file.
```
  cat < inputfile.txt
```

Scripting

Shell Scripts: Write a series of commands in a file to be executed sequentially.
Variables and Loops: Use variables and control structures like loops to create more dynamic scripts.

Resources to Learn Command Line Interface (CLI)

Video Tutorials :-

https://youtube.com/playlist?list=PLS1QulWo1RIb9WVQGJ_vh-RQusbZgO_As&si=dmXiu4iz-FF4xMrJ

**Documentation: - ********Visit Link******

Conclusion

The CLI is a powerful tool that can enhance productivity and enable automation. Mastering the basics and exploring advanced features can significantly improve your workflow.

A Beginner's Guide to the Command Line Interface (CLI)...

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