Unix-Linux — Linux
Linux operating systems (Red Hat, Suse…) are interesting alternatives for drastically reducing server costs compared to other proprietary Unix systems.
With virtualization and Big Data, Linux is now ubiquitous and essential.
Ubuntu - Self-signed certificates with its own certification authority February 9th, 2021
Using self-signed certificates, without a certificate authority, "x509: certificate signed by unknown authority" errors are raised when using command lines for very specific needs (curl…). For self-signed certificates, it is quite possible to create its own tiny certificate authority (CA) in order to avoid using options which prevent the SSL complete chain check up to the certificate authority (curl --insecure, influx --skip-verify…).
Locales on Ubuntu, languages configuration January 11th, 2021
In most programming languages, it is convenient to use locale settings for displaying numbers, dates… Locale settings avoid developing functions to format data. The major inconvenient : locale settings are OS dependent. If a requested locale is not installed on the OS where the program runs, formatting will fail or will fallback to default settings. A quick overview about locale settings on Ubuntu : installation, temporary or permanent modification.
Protecting SSH port with Fail2ban on Ubuntu - Setup and configuration February 10th, 2020
On Ubuntu servers, ufw (Uncomplicated Firewall) is a good tool to apply firewall rules on ports without having to use iptables commands which are quite difficult, but it's not enough to protect port 22 for SSH services. Fail2Ban is the complementary tool to ufw in order to protect an Ubuntu system from attacks on SSH. Fail2Ban is a Python package which interacts like ufw with iptables and can be installed in a Python virtual environment, this is the case in this article.
Ubuntu, securing SSH accesses with the listening port and ufw (Uncomplicated Firewall) May 28th, 2019
The first three steps to secure a new Ubuntu server, server located in the cloud or not :
- Change the default port for SSH connections.
- Disable direct SSH access using the root account.
- Enable ufw (Ubuntu Uncomplicated Firewall) by allowing incoming SSH connections.
Installing and using Komodo Edit on Ubuntu 18.04 May 27th, 2019
For writing code, vim is an excellent tool on Linux systems, but when you are used to the Active State Komodo Edit tool on Windows platforms, in particular for its project definition features, workspaces… you may want to run Komodo Edit on Ubuntu and transfer the GUI on its Windows 10 client. Active State Komodo Edit can be installed and run on an Ubuntu system and the GUI transferred to a Windows 10 client using "X11 forwarding". The prerequisites and installation are fairly straightforward.
Ubuntu, how to display server windows on Windows 10 client hosts with Putty and XMing Server May 24th, 2019
When graphical desktops are not installed on an Ubuntu server, sometimes graphical interfaces are required and must be transmitted and displayed on client machines. As examples :
- Complex installation programs (Oracle…), the graphical version is often preferred to the console mode and/or silent installations.
- Running Android studio on an Ubuntu server, more powerful, rather than on the client machine which does not meet the hardware prerequisites (memory, CPU, etc.).
No more articles in English. Below, the available articles but in french.
Installation de Replication Server v 12.0 et Sybase ASE v 12.5 - Linux July 31st, 2002
Fiche technique exposant les opérations préalables pour l'installation de Sybase Replication Server v 12.0 avec Sybase Adaptive Server Enterprise v 12.5 sous Linux
Installation d’Apache 1.3.23 - Linux July 31st, 2002
Guide rapide de la compilation et de l'installation d'Apache 1.3.23 sous Linux
Installation de MySQL 3.23.49 - Linux July 31st, 2002
Guide rapide de la compilation et de l'installation de MySQL 3.23.49 sous Linux
Installation de Php 4.2.0 avec Sybase ASE v 12.5 / PhpMyAdmin 2.2.3 - Linux July 31st, 2002
Fiche technique sur la compilation de Php v 4.2.0 sous Linux avec intégration des fonctionnalités de Sybase Adaptive Server Enterprise v 12.5 et sur l'installation de PhpMyAdmin 2.2.3
Services sous Linux, creation de services pour Apache et MySQL July 31st, 2002
Services sous Linux : niveaux de démarrage, arrêt, statut… Cas concrets avec les services Apache et MySQL.