Jeff Wilson, Author at RoseHosting

How to Install and Configure an Email Server on Ubuntu 24.04

January 21, 2025May 27, 2024 by Jeff Wilson

In this guide, we will demonstrate how to install and configure a mail server on Ubuntu 24.04, as large and medium-sized companies can greatly benefit from having a private email server. By utilizing a mail server, it becomes feasible to monitor all email traffic closely. Additionally, the flexibility to customize settings enables the establishment of a clear and organized email service. While there are various options available for setting up a Linux email server, we will specifically concentrate on Postfix and Dovecot.

How to use Cron Jobs

May 22, 2024 by Jeff Wilson

Cron is a widely used tool which is used to schedule tasks or so-called jobs on any Unix-like operating system. It can be set up to run the corn jobs daily, weekly, or monthly, but it can also be set up to run any given period or once only.

For example, you want to run a backup script during off-work hours. Using cron jobs, you can easily schedule the script to run at a specific time daily, every second day, weekly, or any other period.

How to Fix 401 Unauthorized Error

May 20, 2024 by Jeff Wilson

When trying to access a website, you may get a 401 unauthorized error message. This error message not only makes things difficult for website visitors but can also make things difficult for website owners. If you are a website visitor, this error message means you cannot log in to or even view a website. You will not be able to enjoy the features on the website. In addition, for website owners, you will not be able to enter the admin dashboard of your own website.

Even though Error 401 is troublesome, you don’t need to worry. We will explain the cause and how to solve it. This article summarizes the 401 Unauthorized HTTP error code and provides instructions on troubleshooting procedures to address it in case you encounter this problem.

How to create a symlink on Linux

May 15, 2024 by Jeff Wilson

Because everything in Linux is treated as a file, using links adds flexibility to create mappings to certain files or directories. There are hard links and soft links. A symlink, also called a symbolic link, is a file that points to another file or directory on the server. Except for files and directories, the symlinks can point to pipes or even other symlinks, which creates symbolic link chains.

What is the Bash Shebang and How to Use it

May 13, 2024 by Jeff Wilson

This tutorial will explain what Bash Shebang is and how to use the Shebang characters in Bash scripts on the Linux system.

Shebang is a sequence of two characters: a number sign (#) and an exclamation mark (!) that gives us the #! at the beginning of every script we need to write. Shebang is also known as hashbang, pound-bang, or hash-pling. It is always defined in the first line of the script and is ignored by the interpreter.

In the next paragraphs, we will show you how to use the Shebang with real examples. Let’s get started!

How to Install Java 21 on Ubuntu 24.04

May 8, 2024 by Jeff Wilson

Java is a high-class object-oriented programming language that lets programmers or administrators run everywhere without recompiling. Java code is compiled and can run on any Java virtual machine regardless of the underlying computer architecture. The Oracle corporation maintains Java and has automatic garbage collection, which means that it automatically manages the memory and helps the programmer avoid doing that task manually. Learning how to install Java 21 on Ubuntu 24.04 is a straightforward process that may take up to 15 minutes. Let’s get started!

Chroot Linux command with examples

May 6, 2024 by Jeff Wilson

This tutorial will explain the chroot Linux command using real examples.

The chroot Linux command is a shorthand for “change root”. We use it to change the apparent root directory for a running process and its children. Chroot runs a command with a specified root directory and is executed by the superuser, commonly known as the root user on many Linux systems. In the following paragraphs, we will explain the syntax of the command, describe the options within the command in more detail, and show you real-life examples used daily by Linux system administrators.

How to Install Nextcloud on Ubuntu 24.04

April 29, 2024 by Jeff Wilson

In this tutorial, we are going to explain in step-by-step detail how to install Nextcloud on Ubuntu 24.04

Nextcloud is a client-server software written in PHP and Javascript that stores data. Its functionality is similar to that of Dropbox, Google Drive, and Office 365. Nextcloud uses MySQL, PostgreSQL, or SQLite to store the data. It can be installed on different operating systems and offers a variety of features such as multi-factor authentication, monitoring capabilities, full-text search, etc. In this blog post, we will install Nextcloud and the LAMP stack.

Installing Nextcloud on Ubuntu 24.04 is straightforward and may take up to 15 minutes. Let’s get started!