Aleksandra Sloan

Aleksandra is an experienced Linux programmer and consultant, known for her expertise in kernel development and contributions to GNU. She has authored tutorials on Apache, Linux, and Perl.

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Install & Use Glances to monitor Ubuntu Server.

Whether you're a system administrator or a casual user, you're probably familiar with TOP and its more colorful, feature-rich cousin, HTOP. But if you're looking for an even more powerful, flexible, and user-friendly system monitoring tool, Glances is the perfect choice! 🚀

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/var/run/reboot-required.

In Linux, key components like the kernel and libraries (e.g., glibc) remain active in memory during operation. After updates, rebooting is essential to ensure processes use the latest versions. Without a reboot, outdated components can cause instability, security risks, and performance issues.

linux 🐧

'ls': Navigating Linux with Precision.

In the vast landscape of Unix-like operating systems, navigating through directories and managing files efficiently is a fundamental task for both users and administrators. At the core of this file management process is a simple yet powerful command: the ls command.

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Block websites on Local.

Blocking access to specific websites can significantly improve system security and manage network traffic. Redirecting malicious or phishing sites helps protect against potential threats while preventing access to unwanted sites reduces network congestion and minimizes security risks.

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touch Command.

The touch command is simple yet powerful. Its primary use is to create empty files and update the timestamps of existing files. Using touch with no option changes a file's access and modification times to the current time —and NO!!!, the touch command does not replace or overwrite

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Delete all files except SNUB.*

Sometimes, you might find yourself in a funny situation where you need to delete or clean up all files in a directory, except those with a specific file name or type. Using commands or scripts with precise patterns and conditions can help you efficiently manage files while preserving the ones

linux 🐧

`cd -`

In Linux, the command cd - is used to switch to the previous directory you were in. It acts as a shortcut to quickly toggle between two directories. Here’s a breakdown of its usage: Use case: 1. Suppose you are in /home/user/docs and you change to /etc:

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.

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

https

HTTPS: Keeping your Online Communication Safe.

HTTPS, an acronym for Hypertext Transfer Protocol Secure, is the encrypted form of HTTP. It ensures secure communication over the internet or within a network. This encryption is achieved through protocols like Transport Layer Security (TLS) or its predecessor, Secure Sockets Layer (SSL).

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Mosh Server as an SSH Alternative.

Indeed, even with a robust internet connection, SSH can sometimes prove unreliable. This is due to the fact that even brief interruptions in the connection between the client and server can lead to complete stalls, forcing you to terminate and re-establish the connection.

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GHOST CMS: backup and restore ⏤ Self-hosting.

We’ve talked a lot about security… but one of the most overlooked aspects of running a website is having a backup. You must take all necessary precautions to ensure that your website is regularly and safely backed up.

tips

How To Fix Apache Configuration Error AH00558: Could not reliably determine the server's fully qualified domain name.

This is the seventeenth 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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ab - Apache server performance testing tool.

Paid-members only

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

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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...

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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.

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How to change Sudo Session's Time Limit.

The sudo command allows us to securely perform great administrative tasks. However, after some time running a command with sudo, will prompt for a password. Because of the 15 minutes grace period; your sudo session has by default. When the 15 minutes are out, you’ll be forced to reenter

linux 🐧

Mail Terminology.

Client and server components There are different components involved in an email transmission from sender to recipient. MUA (Mail User Agent) Client application that allows receiving and sending emails. It can be a desktop application such as Microsoft Outlook/Thunderbird/… or web-based such as Gmail/Hotmail/… (the latter is also

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How to Remove/ Disable Zsh History' Commands on Linux.

This is the ninth 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...

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

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Ghost 5+ -- How to Migrate From MariaDB 10.x to MySQL 8.x

This is the sixth 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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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.