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Linux Command Line – From Zero to Expert

Linux is a popular operating system (OS) amongst developers, system administrators, and IT professionals. One of the key features of Linux is the command line interface (CLI), which allows users to interact with the OS through text commands. While it might seem daunting for beginners, the CLI is an incredibly efficient way to manage files, install software, and automate tasks.

In this article, we will guide you through the basic and advanced Linux commands, and help you become a command line expert.

Basic Linux Commands

Here are some of the most commonly used Linux commands for beginners:

1. pwd

The pwd command allows you to display the present working directory.

2. cd

The cd command enables you to navigate between directories.

3. ls

The ls command shows the contents of the current directory.

4. cat

The cat command displays the contents of a file.

5. touch

The touch command creates a new file.

6. cp

The cp command copies files from one location to another.

7. mv

The mv command moves files from one location to another.

8. rm

The rm command deletes files.

9. mkdir

The mkdir command creates a new directory.

10. rmdir

The rmdir command deletes an empty directory.

Advanced Linux Commands

Once you’ve mastered the basic commands, it’s time to level up your skills with these advanced Linux commands:

1. grep

The grep command searches for a specific string in a file or files.

2. awk

The awk command is a powerful tool for manipulating and processing text files.

3. sed

The sed command is used for editing text files in a non-interactive way.

4. top

The top command displays the processes currently running on the system and their resource usage.

5. ps

The ps command lists the processes running on the system.

6. tar

The tar command is used for archiving and compressing files.

7. curl

The curl command is used for transferring data from or to a server.

8. ssh

The ssh command is used for securely connecting to a remote machine.

9. scp

The scp command is used for securely copying files between machines.

10. find

The find command is used for searching files and directories.

Conclusion

Learning the Linux command line may seem intimidating at first, but it’s an essential skill for anyone working in IT. With this guide, you have the basic and advanced commands to become a Linux command line expert. Remember to always use caution and double-check your commands before executing them, as even small mistakes can have major consequences. Happy Linux command line exploring!