How to Install and Configure Redis on Ubuntu 20.04
This tutorial describes how to install and configure Redis on Ubuntu 20.04. Redis is an open-source in-memory key-value data store.
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Creating a Self-Signed SSL Certificate
A self-signed SSL certificate is a certificate that is signed by the person who created it rather than a trusted certificate authority. This article explains how to generate a self-signed SSL Certificate using the openssl tool.
Bash Source Command
The source command reads and executes commands from the file specified as its argument in the current shell environment. Source is a shell built-in in Bash and other popular shells used in Linux and UNIX operating systems.
How to Increment and Decrement Variable in Bash (Counter)
One of the most common arithmetic operations when writing Bash scripts is incrementing and decrementing variables. This is most often used in loops as a counter, but it can occur elsewhere in the script as well.