Web Servers

Snaps are self-contained application packages with mediated access to the system they are installed on. They have all the required dependencies within that package. This tutorial explains how to install Snap on Ubuntu.

The wall command allows sending terminal messages to all logged-in users at once. This feature is particularly useful in scenarios when system administrators perform system maintenance tasks, and they need a quick way to inform users they should save their work and log out. This tutorial explains the wall command syntax and options.

Validating a file download by comparing its original checksum with the checksum you obtained by checking the file yourself is a reliable way to confirm the integrity of your download. This tutorial shows how to use the Linux md5sum command to verify the integrity of a file.

SQL Server Express is a light, feature-restricted version of Microsoft's SQL Server 2019.
This tutorial will guide you through the process of installing, upgrading, or uninstalling your copy of SQL Server Express 2019.

The sleep command is used when it is necessary to postpone the execution of commands on the command line or in shell scripts. This tutorial lists ways in which you can utilize the sleep command and provides examples for each use case.

By default in Linux, a command received through standard input writes directly to standard output. The tee command changes that behavior by allowing another command to use a file as the output. This tutorial lists ways in which you can use the tee command.

RHEL is now free for small production workloads, up to 16 systems. Red Hat announced their newly modified no-cost RHEL program as a response to the growing dissatisfaction due to the switch to CentOS Stream.

To avoid compatibility problems when implementing new PHP-related features or debugging a website, it is useful to know the PHP version you are working with. This tutorial explains how to check the PHP version running on your website or a local machine.

Using the improper storage engine can lead to errors in querying and reduced speed and performance. In this article, you will learn differences between MyISAM and InnoDB storage engines. You will also learn how to check the storage engine and how it can be converted.

Despite the reliability of Apache web servers, '403 Forbidden' errors are not uncommon. This tutorial goes over different things that could cause an Apache '403 Forbidden' error and ways to fix them.