Ubuntu: installing and configuring a DHCP server with KEA - isc-kea
Introduction In this tutorial, I’m going to explain how to set up a DHCP server on Ubuntu using KEA (isc-kea). isc-dhcp-server has not been maintained since the end of …
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Linux
51 articles
Generate a PFX certificate from a key and a .crt file
In this tutorial, I’ll explain how to convert a certificate to PFX format from .key and .crt files. To convert a certificate to PFX format, you’ll need OpenSSL. In this …
Ubuntu: Display S.M.A.R.T. data for an NVMe drive
In this tutorial, I’ll explain how to view the S.M.A.R.T. (Self-Monitoring, Analysis, and Reporting Technology) data for an NVMe drive on Ubuntu using the command line. …
Ubuntu: testing disk performance from the command line
In this tutorial, I’ll explain how to test the read and write performance of a disk on Ubuntu using the command line. To give you some points of comparison, I ran the …
rsync: how to copy/back up files on Linux
Introduction to rsync LinuxIn this tutorial, I’ll explain how to usersync rsync (Remote Synchronization) to make copies or backups. rsynIt is a folder synchronization …
Ubuntu: how to block updating a specific package with apt-mark
Find out how to block the update of a package under Ubuntu with apt-mark hold. Simple tutorial to freeze a version and avoid unwanted updates.
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 …
Ubuntu 24.04: install Nginx 1.27.X
In this tutorial, I will explain how to install Nginx version 1.27.X on Ubuntu 24.04 (this also works for Ubuntu version 22.04). At the time of writing this tutorial, the …
Configure a reverse proxy with Apache on Ubuntu
Introducing the Reverse Proxy In this tutorial, I will explain how to configure a reverse proxy with Apache on Ubuntu (By adapting the Apache installation commands, this …
Ubuntu: BusyBox solve UNEXPECTED INCONSISTYENCY error
In this tutorial, I will tell you how to resolve the UNEXPECTED INCONSISYENCY error when starting the computer in BusyBox mode. During a sudden shutdown with a disk …
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 …
Ubuntu 22.04: install a LAMP server (Linux Apache MariaDB PHP)
LAMP Overview In this tutorial, I will explain how to install a LAMP server on Ubuntu 22.04. LAMP stands for Linux Apache MariaDB PHP, it is a set of software that we …