Top 6 Essential Linux Commands I Can’t Live Without – And Their Importance

Using the Linux command line may not be essential, but several commands are indispensable for daily tasks. Here are six commands that can greatly enhance your efficiency and keep your systems running smoothly.

1. top
   This command is crucial for monitoring system processes. It provides real-time data about resource usage for applications, enabling you to identify any issues. To use it, just type:

   top

2. ssh
   Secure Shell (SSH) is vital for remote access to other machines. It’s particularly useful for troubleshooting applications like VirtualBox. If a guest VM freezes, you can use SSH to gain access and investigate. To connect to a server, use:

   ssh username@IP_address

3. sudo
   This command allows you to execute commands with administrative privileges without switching to the root user. It’s essential for installing software and managing system services securely. For example, to install a package:

   sudo apt install package-name

4. apt
   The Advanced Package Tool (APT) is vital for managing applications on Debian-based distributions. It simplifies software installation and can resolve broken installations. To install GIMP, for instance:

   sudo apt install gimp -y

5. wget
   Wget is used for downloading files, especially when there’s no GUI available. It’s particularly helpful for server-based software installations. To download a file, just use:

   wget http://example.com/file

6. systemctl
   This command allows you to manage system services, check their statuses, and troubleshoot issues. It’s useful for ensuring everything runs smoothly. To start the SSH service, you can do:

   sudo systemctl start ssh

These commands help streamline everyday Linux usage, making it easier to manage systems and perform tasks effectively. For anyone new to Linux, familiarizing yourself with these commands can significantly enhance your experience.

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