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How to Enable/Disable Services on Ubuntu Systemd. (Update !!!)

Sometimes we require some services to start up automatically at boot up, such as web servers or ssh, and other times we need to terminate services that we no longer require and are eating CPU and RAM up.

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Managing Users.

Linux is a multi-user operating system, which means that several users can interact the system at the same time. As a system administrator, you are in charge of managing the system's users and groups, which includes adding and deleting users and assigning them to various groups.

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How to Remove Packages Using the Command Line in Linux.

Apt The apt command is a powerful command-line tool, which works with Ubuntu’s Advanced Packaging Tool (APT) performing such functions as installing new software packages, upgrading existing software packages, updating the package, upgrading the entire Ubuntu system, and even removing packages. List installed packages You can list all installed

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Most Useful Nano Commands and Shortcuts.

Working under any Linux Server involves lots and lots of files configuration. Some use Vi, Vim, or Emacs, yet powerful but somehow tedious to learn. For those who need a more simple and versatile text editor, there is nano. GNU nano is a small and friendly text editor. Besides basic

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User authentication process.

Have you ever asked yourself how the user authentication process works? Let's jump. What is User Authentication? User authentication is a security process that covers all of the human-to-computer interactions that require the user to register and log in. Simply said, authentication asks each user: 'who the

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How to Remotely Reboot your Server.

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Rsync Command in Linux.

Backup and recovery describe the process of creating and storing copies of data that can be used to protect organizations against data loss. Restoring from a backup typically means putting the data back in its original or another location, ready to replace any lost or corrupted data.

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Monitoring Web server logs (Apache, NGINX) with Netdata.

This is the fourth in a series of posts featuring Protips, tips, tricks, hacks, and secrets provided by Our Team 🙊 — We want to share our top tips for the growing and thriving Linux community out there. Because sometimes you need a little help...

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Hashing, Salting, and Password Storage on Linux.

Whenever you want to check your email, open an SSH session, or even make a purchase on any of your favorite websites, you were prompted to create (and if not too much asked, try to remember it!) a password. It is the first line of defense against unauthorized access to your data.

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The Differences between Sudo and Su in Linux: A Beginner’s Guide.

Confused about when to use su versus sudo? This tutorial will clarify the differences between the two commands, explain when each is appropriate, and guide you on how to use them effectively for better system management and security.

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Need to downgrade your Ghost version?

This is the third in a series of posts featuring Protips, tips, tricks, hacks, and secrets provided by Our Team 🙊 — We want to share our top tips for the growing and thriving Linux community out there. Because sometimes you need a little help...

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Most efficient way to Empty File Content in Linux.

In some situations, you might want to empty an existing file to a zero-length. In another word, removing the file contents without deleting the file. Is that even possible?

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Fix SSH Failed Permission Denied (publickey, gssapi-keyex, gssapi-with-mic).

This is the second in a series of posts featuring Protips, tips, tricks, hacks, and secrets provided by Our Team 🙊 — We want to share our top tips for the growing and thriving Linux community out there. Because sometimes you need a little help...

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Why do some lines in the SHELL' history end with "*"

This is the first in a series of posts featuring Protips, tips, tricks, hacks, and secrets provided by Our Team 🙊 — We want to share our top tips for the growing and thriving Linux community out there. Because sometimes you need a little help...

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Using Monit to Monitor Linux Daemon, CPU, Filesystem, Network and Files on Ubuntu Server.

Services on any server must be operational and perform their duties effectively. It is critical to monitor the overall state of your server, including processes, programs, directories, files, and so on. This is known as system monitoring.

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Running commands over SSH.

Have you ever wanted to send a command or a script to a remote computer without ever actually logging in to the shell? - well, SSH (Secure Shell) is your friend. Let's say you would like to check your server process activity by using the "top"

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Understand the /etc/passwd file.

The /etc/passwd file is used to keep track of every registered user that has access to a system. In other words, it stores user account information.

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v2.wttr.in: Your Weather Forecast right in your Terminal.

v2.wttr.in is a console-oriented weather forecast service that supports various information representation methods like terminal-oriented ANSI-sequences for

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Working with pipes || on Linux.

No, no, nooo... not the PVC one!!! ... but this command-line pipe is just as useful, and its hold a ton of value for system administrators. The | command is called a pipe. It's a form of redirection in Linux used to connect the STDOUT of one command into the STDIN of a second command.

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passwd Command.

Both Linux and UNIX-like (UN*X) operating systems use the passwd command to change user's password. The passwd is used to update a user’s authentication token (password) stored in /etc/shadow file. The passwd change passwords for user and group accounts.

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Install & Use Glances to monitor Ubuntu Server.

Whether you're a system administrator or a casual desktop user, you've probably heard of the most popular terminal-based system monitoring tools, TOP, and its colorful, feature-rich cousin-in-law HTOP. 😬😅

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Edit /etc/hosts/ in Linux.

The hosts file is a local file or local DNS system that contains a static table lookup for hostnames and IP addresses. It is used to map domain names to IP addresses and can also be used as an alternative to DNS. It is available in all operating systems, including Windows, Linux, and macOS.

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How to resolve LAN hostnames on Ubuntu Server.

Although we are accustomed to using names (i.e, www.snubmonkey.com) when surfing the Internet, the Internet is pretty much based on numbers known as IP addresses.

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How to Kill SNAP on Ubuntu Server.

Packages in Linux are managed and distributed via repositories. Package management in Debian-based distributions is officially handled by APT (Advanced Packaging Tool). And of course; as you would have guessed snap is another package management systems.

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How to Check if Your iPhone is Infected with Pegasus Spyware.

Concerned about recent revelations of widespread political espionage? On the list: Journalists, activists, prime ministers, presidents and a king identified over 1,000 people in 50 countries who were allegedly under surveillance using the Pegasus spyware.