System Tools

How To Manage Packages on FreeBSD 10.1 with Pkg — step-by-step Linux tutorial on Progressive Robot

How To Manage Packages on FreeBSD 10.1 with Pkg

FreeBSD’s binary package manager, pkg, can be used to easily manage the installation of pre-compiled applications—the FreeBSD equivalent Debian and RPM packages. In this tutorial, we will show you how to manage packages on FreeBSD 10.1. This includes installing and deleting packages, among other tasks.

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How to Set Up SSH Keys on Debian 9 — step-by-step Linux tutorial on Progressive Robot

How to Set Up SSH Keys on Debian 9

SSH-key-based authentication provides a more secure alternative to password-based authentication. In this tutorial we’ll learn how to set up SSH key-based authentication on a Debian 9 installation.

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Использование Cron для автоматизации задач в CentOS 8 — step-by-step Linux tutorial on Progressive Robot

Использование Cron для автоматизации задач в CentOS 8

Предыдущая версия данного обучающего руководства была написана Шоном Льюисом. Cron — это хронологический демон-планировщик задач, работающий в операционных системах типа Unix, включая дистрибутивы Linux. Cron запускается в фоновом режиме,…

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How To Use Foreign Keys in SQL — step-by-step Linux tutorial on Progressive Robot

How To Use Foreign Keys in SQL

When working on a large SQL project, you must maintain the accuracy and consistency of data across all tables using foreign keys. This is where referential integrity comes into play. Referential integrity ensures all data references are valid in SQL and prevents inconsistent entries or orphaned records. In this tutorial, you’ll enforce referential integrity with foreign keys on your database.

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How To Use PAM to Configure Authentication on an Ubuntu 12.04 VPS — step-by-step Linux tutorial on Progressive Robot

How To Use PAM to Configure Authentication on an Ubuntu 12.04 VPS

PAM, or Pluggable Authentication Modules, is a system for connecting authentication services to application requesting authentication, through the use of a consistent API. Authentication schemes can be switched out without having to reconfigure large amounts of code. In this guide, we will discuss how PAM works and give a basic explanation of how the system operates.

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