today's howtos

posted by Roy Schestowitz on Oct 27, 2022

• How to Setup APT Proxy on Ubuntu 22.04 LTS

  A proxy server is an intermediate server that sits between the client computer and the internet. In this tutorial, we will show you how to set up proxy settings and apt-proxy in Ubuntu 22.04 Server and Desktop system.

• 7 Linux commands to gather information about your system | Enable Sysadmin

  Get information about your CPU, storage, RAM, BIOS, and more without leaving the terminal.

• SMTP Commands: Essential SMTP Commands and Response Codes

  The ASCII Simple Mail Transfer Protocol (SMTP) comes with an array of commands and response codes. It functions on a client-server interface and uses TCP port 25. Since SMTP sessions are conversations between SMTP clients and SMTP servers, SMTP commands are often sent from the client machine to the server device.

  Every command should consist of the keyword for the command and zero or more arguments. So, while some keywords contain one or more arguments, the keywords for several commands will not have any accompanying arguments.

  The commands can either be supported by SMTP, CSSMTP, or both. Notably, a client sends commands in alphabetical characters while the server responds using numerical codes.

• Referential Integrity

  Referential Integrity is discussed in this tutorial in the relational database context. Referential integrity is a data property, stating that all its references are valid. Two tables are concerned here. One is called the referenced or parent table. This referenced table has a primary key, which may be made up of one or more columns. The other table has a foreign key whose values are the same as those of the primary key of the referenced table. The other table is referred to as a child table to the parent table.

  The number of columns that make up the foreign key in the child table is the same as those that make up the primary key in the referenced (parent) table. All the foreign key values are found in the column of the primary key. However, the values in the foreign key column may repeat in the child table.

• Boyce–Codd, Fourth and Fifth Normal Forms

• Install Mate Desktop on Debian 11

  As time passes, one can get bored with the same interface, which can be frustrating because we all need something new at some point in our lives, and the same goes with Debian 11, in which the default theme isn’t good enough for most of the users. So, today we will help you change the appearance of your Debian 11 desktop environment by installing Mate Desktop, which has a new, exciting, and beautiful look.

  This article will cover all aspects of Installing Mate Desktop on Debian 11.

• Installing Google Chrome in openSUSE

  “Developed and maintained by Google, Google Chrome is one of the most popular web browsers. At the time of writing, Chrome has around 70% of the browser market share across all devices. It’s a cross-platform web browser that’s free of charge.”

  This guide will teach us how to install Google Chrome in openSUSE.

• How to Fix - Failed to Start Light Display Manager Error [Solved]

  This post guides you on fixing the error – Failed to Start Light Display Manager Error in Linux systems.

  I know it’s not a good feeling when you expect something to come up on the screen and suddenly face this particular error. It is uncomfortable because you are lost in a terminal and unsure of what to do.

  If you follow some steps, it’s easier to fix. So, let’s try to fix it.

• How to Fetch Cluster Information in Cassandra