today's howtos

posted by Roy Schestowitz on Dec 15, 2022

• Day 59: naming container

  When you add a container query, it will look for the nearest ancestor container, by default. If you have multiple nested containers or if you just want to make sure that your query uses the right container, you can name containers and query them specifically.

• Day 58: ordering nested layers

  On day 43, we've learned how to group layers and on day 46, how to order them. In this post, we’ll look into ordering grouped layers.

• Day 57: media queries: range syntax

  With CSS Media Queries Level 4, it's possible to use mathematical comparison operators in media queries.

• How to Install Nagios Monitoring in RHEL, Rocky, and AlmaLinux

  Nagios is an awesome Open Source monitoring tool, that provides a more comprehensive monitoring environment to always keep an eye on your all machines/networks�whether you are in your data center or just your small labs.

  With Nagios, you can monitor your remote hosts and their services remotely on a single window. It shows warnings and indicates if something goes wrong in your servers which eventually helps us to detect some problems before they occur. It helps us to reduce downtime and business losses.

• How To Use SSH ProxyJump and SSH ProxyCommand in Linux

  In this guide, we demonstrate how to use SSH ProxyJump and SSH ProxyCommand commands when connecting to a jump server.

  In our previous guide on how to set up an SSH Jump Server, we covered the concept of a Bastion Host. A Bastion host or a Jump Server is an intermediary device that an SSH client connects to first before accessing the target remote Linux system. An SSH Jump server acts as a gateway to your IT resources, thus reducing the attack surface.

  The SSH ProxyJump and ProxyCommand commands determine how a client connects to the remote server via the jump server, jump host, or bastion server.

  This guide shines the spotlight on the SSH ProxyJump and SSH Proxy Command in Linux.

• How to edit MP3 tags on a Chromebook

  If you have MP3 files on your Chromebook that you need to add tags to, it might disappoint you to find out that there aren’t any good native Mp3 tag editors for Chrome OS. Thankfully, Chrome OS can run Linux apps. In this guide, we’ll show you how you can edit MP3 tags on a Chromebook using Picard MusicBrainz.

• How To Install RabbitMQ on Ubuntu 22.04 LTS - idroot

  In this tutorial, we will show you how to install RabbitMQ on Ubuntu 22.04 LTS. For those of you who didn’t know, RabbitMQ is a popular open-source message broker that stores and passes asynchronous messages between two or more services according to pre-defined rules. It is an intermediary software that ensures your systems are more reliable, scalable, and always available. It implements the Advanced Message Queuing Protocol (AMQP), Streaming Text Oriented Messaging Protocol (STOMP), MQ Telemetry Transport (MQTT), and other protocols.

  This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the RabbitMQ on Ubuntu 22.04 (Jammy Jellyfish). You can follow the same instructions for Ubuntu 22.04 and any other Debian-based distribution like Linux Mint, Elementary OS, Pop!_OS, and more as well.

• Find Files and Directories in Linux from Command Line [Examples]

  This article is part of the Linux command series and explains various examples of find commands in Linux to find files and directories.