https://rdr-it.com/en/tag/linux/System administration, virtualization, security and tools for IT professionals.en-USFri, 09 Oct 2026 17:31:24 +0000https://rdr-it.com/en/ssh-resolve-error-warning-unprotected-private-key-file/Wed, 21 May 2025 04:30:00 +0000https://rdr-it.com/en/ssh-resolve-error-warning-unprotected-private-key-file/In this tutorial, I will explain how to resolve the following error : Warning: unprotected private key file! when you try to SSH from Linux to another SSH server with a …https://rdr-it.com/en/windows-11-install-wsl-to-run-linux-on-windows/Wed, 09 Apr 2025 04:30:00 +0000https://rdr-it.com/en/windows-11-install-wsl-to-run-linux-on-windows/In this tutorial, I will explain how to install WSL (Windows Subsystem for Linux) on Windows 11 to allow you to run a Linux distribution (Ubuntu) directly on Windows. WSL …https://rdr-it.com/en/download-glpi-from-command-line-on-linux/Wed, 17 Jul 2024 04:30:00 +0000https://rdr-it.com/en/download-glpi-from-command-line-on-linux/In this tutorial, I will explain how to download GLPI from the command line with wget, unzip it and move it to the virtualhost folder. If you have a Web server under …https://rdr-it.com/en/proxmox-create-an-lxc-container/Tue, 02 Apr 2024 04:30:00 +0000https://rdr-it.com/en/proxmox-create-an-lxc-container/In this tutorial, we will see how to create an LXC container on Proxmox. Overview of LXC LXC which allows container management on Linux. Like any containerization system, …https://rdr-it.com/en/ubuntu-22-04-install-docker/Wed, 07 Feb 2024 05:30:00 +0000https://rdr-it.com/en/ubuntu-22-04-install-docker/In this tutorial, I will show you a script to install Docker and Docker Compose on Ubuntu 22.04. Today more and more applications are available in containers with Docker, …https://rdr-it.com/en/ufw-delete-a-rule/Wed, 22 Nov 2023 09:15:24 +0000https://rdr-it.com/en/ufw-delete-a-rule/In this tutorial, I will explain how to easily delete a firewall rule managed by UFW. UFW is a command line interface that simplifies the use of iptables rules.https://rdr-it.com/en/update-ansible-on-ubuntu/Wed, 18 Jan 2023 05:30:00 +0000https://rdr-it.com/en/update-ansible-on-ubuntu/In a previous tutorial, I explained how to install and use Ansible to execute automatic actions on your Windows and Linux servers. Like all applications, Ansible is …https://rdr-it.com/en/ncdu-analyze-disk-space-in-command-line-on-linux/Wed, 31 Aug 2022 04:30:00 +0000https://rdr-it.com/en/ncdu-analyze-disk-space-in-command-line-on-linux/In this “’little” tutorial, I will explain how to view and analyze the space in the command line on Linux with ncdu. If you are adapted from WinDirStat or TreeSize on …https://rdr-it.com/en/docker-installation-and-concrete-use-on-ubuntu/Wed, 05 Jan 2022 05:30:00 +0000https://rdr-it.com/en/docker-installation-and-concrete-use-on-ubuntu/In this article, I’ll explain how and why I usedDocker for the first time. Since then, I’ve become a big fan of this technology, and whenever possible, I use it to deploy …