Scarlett Clarke

Scarlett has been working as a data analyst for the past few years. She loves blogging and reading everything related to web application development and modern IT technologies.

proxies

Forward Proxy VS Reverse Proxy.

The position of a proxy — is what makes a proxy either a forward or reverse proxy. The easiest way to remember the difference between these two proxy is - Forward proxy is used by clients where as Reverse proxy is used by servers. Let us jump into it.

how to 🪄

No More Manual Copying with the find command.

Simplify file transfers with the power of find, cp, and rsync. This efficient approach automates data backups, ensuring seamless and secure transfers to a local or remote server—eliminating the need for manual effort. 🚀

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Difference: { } \; vs { } +

The find command in Linux is a powerful tool used to search for files and directories within a specified directory hierarchy. It allows users to search based on various criteria such as name, type, size, modification time, and more. Once files or directories matching the search criteria are identified, you

linux 🐧

Core aspects of Linux Server.

The core aspects of Linux cover the fundamental principles, architecture, and essential components that define this powerful operating system.

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How to Rename a Service Name for a Port Number.

terminal

The Five (5) Most Used Commands on Unix-like Systems.

Unix-like operating systems offer a wide range of commands for various tasks. Some commands are fundamental for performing everyday tasks efficiently. These commands are essential for navigating the file system, managing files, or obtaining system information. 🎧 Here are the top five (5) most commonly used commands: 1. ls: Lists the

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How to automatically Backup Your Files to a Remote Server with Rsync.

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Connecting to Wi-Fi through CLI on macOS.

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Add Multiple IP Addresses into One Single Network Interface. (Server)

Adding an additional; secondary or third IP is a thing to think of when you are a Linux system administrator. Some of you may be curious as to why we would allocate numerous IP addresses to a single network card...

issues 🛠

Issue... Ubuntu netplan gateway4/6 has been deprecated!!!

Netplan is a utility for easily configuring networking on a linux system. You simply create a YAML description of the required network interfaces and what each should be configured to do. With the release of Ubuntu 22.04 (Jamie Jellyfish), NetPlan has changed !!! This option is not new. In fact,

how to 🪄

Systemd journal?

When Systemd replaced traditional SysVinit scripts it introduced its own logging system called journal. Running based services such as syslog ,Rsyslog are no longer needed as all system events are written in the journal.

linux 🐧

APT vs Snap: What the, what the hell ...

In Linux, package managers are software tools that assist users in searching, downloading, installing, removing, and updating software packages on their system and can be accessed by either Command-Line or through a Graphical User Interface application. There is a variety of package managers to choose from, including dpkg (Debian Package

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How to install Fing on Ubuntu Debian Servers.

The Fing Command Line Interface (Fing CLI) is a standalone program that provides a set of very handy network troubleshooting tools (NIC information, scan, ping, traceroute, and so on). Installation The software has been packed using Debian (DPKG) and Read Hat (RPM) package manager. Below is the Architecture supported: • i686

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Using the SSH Client Config File ~/.ssh/config.

Imagine you have to regularly connect to +15 remote systems over SSH. That means to remember all of the remote IP addresses, different usernames, non-standard ports, what authentication keys to use, and various command-line. Quite a big waste of time. Fortunately, SSH allows you to generate a config file that

linux 🐧

Difference between apt upgrade, apt full-upgrade, and do-release-upgrade.

There's an apt upgrade, apt full-upgrade, and do-release-upgrade command. Whaaaaaaaaat _ Well..., don't confuse the three commands to upgrade a Debian- or Ubuntu-based machine as they do different things. Confusing _ That's why we are here for _ seat and relax, let us jump right in. apt

linux 🐧

SYN-SYN-ACK and ACK 🤝

Understanding TCP Flags TCP flags are used to indicate a particular state during a TCP conversation. TCP flags can be used for troubleshooting purposes or to control how a particular connection is handled. Each of them has its own significance. They initiate connections, carry data, and tear down connections. Commonly

terminal

49 Most-Used Linux Commands You Should Know.

The Linux command line is a text-based computer interface. It's also known as the Shell, Terminal, Console, CLI, or Prompt, just to name a few. Any graphical user interface (GUI) is nothing more than a graphical representation of command-line applications.

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Upgrade from Ubuntu 20.04 LTS to 22.04 LTS Server

Ubuntu 22.04 is a Long-Term Support (LTS) release and will receive ongoing app updates and critical security fixes for the next five years. New Linux kernel releases and graphics driver updates are also rolled out as software updates every six months or so. Ubuntu 22.04 brings a ton

security 🦾🦿

Is 256-bit SSL Encryption any Safe?

SSL certificates enable encrypted connections between a client and a web server via the transport layer security (TLS) protocol. Nobody can intercept a message while it’s being transmitted over an encrypted connection. Again, it does not protect your website from getting hacked.

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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.

linux 🐧

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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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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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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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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How to remove PPA repositories on Ubuntu Server.

Whenever you want to install a software package to your Ubuntu system, you first refer to the official Ubuntu repository listed in your system’s sources.list file. If the software is not available there, you can install it through any PPA repository it is available on.