From Empty Computer to Guest OS in 5 min – Install Vagrant and VirtualBox on Ubuntu 16.04.3 Live USB

Posted on September 13, 2017 by Tero Karvinen

With VirtualBox, you can run guest operating systems – Linux, Windows, OSX – under Linux. Vagrant makes it easy to create a new headless guest system and connect to it with SSH. It’s very fast: less than five minutes to … Continue reading →

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Aikataulu – Linux palvelimet ict4tn021 4-ti ja 5-to – alkusyksy 2017 – 5 op

Posted on August 17, 2017 by Tero Karvinen

English: Learn to manage your own Linux server – in 8 weeks. Beginners welcome. Course is in Finnish. Both groups have completed their final lab tests. Congratulations to those who finished this demanding course. Final lab test for group 4-Tuesday. … Continue reading →

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Vagrant Revisited – Install & Boot New Virtual Machine in 31 seconds

Posted on April 11, 2017 by Tero Karvinen

Vagrant installs a new virtual machine automatically. In half a minute, you control the machine with ssh.

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Aikataulu – Palvelinten hallinta ict4tn022-2 – 5 op, uusi OPS – loppukevät 2017 p2

Posted on March 29, 2017 by Tero Karvinen

Hallitse palvelimiasi Pupetilla. Pupettia käyttävät esimerkiksi Google, Mozilla ja Wikipedia. Sillä on toteutettu myös US Government Security Baseline hallinnon Linux ja Windows -tietokoneisiin.

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Agenda for Linux Basics dat8tf063-29 Spring 2017

Posted on January 15, 2017 by Tero Karvinen

Learn the basics of Linux in just 8 weeks! Linux course is teached in English in Pasila, Helsinki.

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Windows 10 as a Puppet Slave for Ubuntu 16.04 Master

Posted on November 28, 2016 by Tero Karvinen

Puppet can control Windows 10 slaves, making it much easier to administer Windows boxes. This article shows how to configure Windows 10 as a Puppet slave for an Ubuntu 16.04 LTS xenial master.

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Instant Firewall – sudo ufw enable

Posted on September 8, 2016 by Tero Karvinen

Firewall prevents access to all ports, except the ones you allow. Ubuntu ‘ufw’ command makes it easy to set up a firewall on Ubuntu. It only takes two commands to set up a firewall: $ sudo ufw allow 22/tcp $ … Continue reading →

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Disable touchpad when typing – syndaemon

Posted on May 24, 2016 by Tero Karvinen

Does your palm hit your touchpad when you type? Syndaemon momentarily disables touchpad when typing, with many extra features.

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Prefer IPv4 on Ubuntu 16.04 LTS xenial – /etc/gai.conf

Posted on May 12, 2016 by Tero Karvinen

New Ubuntu 16.04 LTS Xenial prefers IPv6 connections. In some networks, this breaks software updates. You can easily fix this by making Ubuntu prefer IPv4 connections over IPv6.

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