Just a hint of some major advance commands in Linux.

Linux is an incredibly powerful operating system, and with great power comes great responsibility. To truly harness the potential of Linux, you need to learn its advanced commands and the way it works but with it's own language. While they may seem intimidating at first, mastering these commands can help you become more efficient and productive in your Linux environment. In this article, I will share some of the most useful advanced Linux commands.

• SSH

SSH (Secure Shell) is a command-line tool used to access a remote Linux server securely. It allows you to remotely connect to another computer and execute commands as if you were sitting in front of it. To use SSH, you need to have a remote server and a client machine with SSH installed.

Here’s an example:
Command: ssh user@ip-address
In this example, "user" is the username for the remote server, and "ip-address" is the IP address of the server. Once you enter this command, you will be prompted for the password for the remote server.

• SCP

SCP (Secure Copy) is another command-line tool that allows you to securely copy files between two computers. It is similar to the traditional cp command, but it uses SSH for secure file transfers.

Here’s an example:
Command: scp user@ip-address:/path/to/source/file /path/to/destination/
In this example, "user" is the username for the remote server, "ip-address" is the IP address of the server, and "/path/to/source/file" is the path to the file you want to copy. "/path/to/destination/" is the path to the directory where you want to copy the file.

• TAR is a command-line tool used to create and extract compressed archive files. It is commonly used to back up and transfer large amounts of data between computers.

Here’s an example:
Command: tar -czvf archive.tar.gz /path/to/folder
In this example, "-c" tells TAR to create a new archive, "-z" tells it to compress the archive using gzip, "-v" tells it to be verbose, and "-f" tells it to write the archive to a file. "archive.tar.gz" is the name of the archive, and "/path/to/folder" is the path to the folder you want to compress.

• GREP is a command-line tool used to search for specific text in files. It is a powerful tool for quickly finding and analyzing data.

  Here’s an example:
  Command: grep -r "search term" /path/to/folder
  n this example, "{print $1,$3}" tells AWK to print the first and third fields of each line in "file.txt". Fields are separated by spaces or tabs.

• AWK is a command-line tool used for text processing and data manipulation. It is a powerful tool for working with large datasets.

  Here’s an example:
  Command: awk '{print $1,$3}' file.txt</mark>
  In this example, "{print $1,$3}" tells AWK to print the first and third fields of each line in "file.txt". Fields are separated by spaces or tabs.

• SED is a command-line tool also used for text processing and data manipulation. It is similar to AWK, but it is more focused on search and replace operations.

  Here’s an example:
  Command: sed 's/search term/replace term/g' file.txt
  In this example, "s/search term/replace term/g" tells SED to search for "search term" and replace it with "replace term" globally in "file

• TOP is a command-line tool used to monitor system resources and processes. It is a useful tool for troubleshooting performance issues and identifying resource-intensive processes.

  Here’s an example:
  Command: Top
  In this example, simply entering the "top" command will display a real-time overview of system resources and processes. Pressing the "q" key will exit the tool.

• NETSTATN is a command-line tool used to display network connections and network statistics. It is a useful tool for troubleshooting network issues and identifying network usage.

  Here’s an example:
  Command: netstat -an
  In this example, "-an" tells NETSTAT to display all network connections and their respective IP addresses and port numbers.

• DF is a command-line tool used to display disk space usage. It is a useful tool for monitoring disk usage and identifying storage issues.

  Here’s an example:
  Command: dh -h
  In this example, "-h" tells DF to display disk space usage in a human-readable format.

• DU is a command-line tool used to display disk usage for specific directories and files. It is a useful tool for identifying which directories and files are taking up the most disk space.

  Here’s an example:
  Command: du -h /path/to/directory
  In this example, "-h" tells DU to display disk usage in a human-readable format, and "/path/to/directory" is the path to the directory you want to analyze.

• Summary

  Mastering these advanced Linux commands will not only help you become more efficient and productive in your Linux environment, but it will also make troubleshooting and monitoring system resources and processes easier for the business and your fellow colleagues. With practice and experimentation, you can start to grow your Linux knowledge especially when performed on the terminal with real working projects.