## More in Tux Machines

### today's howtos

• ##### Install MultiPass on Ubuntu : A good VM Manager - LinuxTechLab

Multipass is a very lightweight VM manager that can be used to launch & manage VMs with a single Linux command. It is available on Linux, macOS as well as Windows. On Windows, it used Hyper-V, on Linux, it uses KVM & on Mac it used HyperKit. It can simulate a cloud environment with the support of cloud-init. It helps to create a new development or testing environment with ease. It also supports VirtualBox on macOS & Linux also. In this tutorial, we will learn how to install Multipass on Ubuntu

• ##### How to install Java on Manjaro Linux

Many developers and programmers choose Manjaro because it's one of the most user-friendly and feature-rich Linux distributions. In this guide, we go over the steps to install the Java Development Kit on Manjaro Linux. We'll show you how to install both the OpenJDK package (which is free and GPL-licensed) as well as Oracle Java SE Development Kit. Arch Linux and Manjaro only officially support the OpenJDK, as that is the non-proprietary version. However, the Oracle package can be installed from the AUR, as you'll see shortly.

• ##### Lenovo ThinkPad Booting GNU/Linux USB

Lenovo ThinkPad users can boot USB drives finely. As Ubuntu Buzz often publishes booting articles, now let's learn how to practice that on computers using ThinkPad as example. By making this tutorial I hope I give abilities to all computer users who didn't know yet they can do this amazing thing. Let's go!

• ##### How to install Arduino IDE on CentOS 8

Arduino IDE stands for the “Arduino Integrated Development Environment”. Arduino is used to create electronic devices that communicate with their environment using actuators and sensors. Arduino IDE contains an editor that is used for writing and uploading programs to the Arduino board. Before start to create projects through Arduino, the user needs to set up an IDE for the programmable board. In this article, we will learn how to install the latest Arduino IDE on CentOS 8.

• ##### Vincent Fourmond: QSoas tips and tricks: generating smooth curves from a fit

Often, one would want to generate smooth data from a fit over a small number of data points. For an example, take the data in the following file. It contains (fake) experimental data points that obey to Michaelis-Menten kinetics: $$v = \frac{v_m}{1 + K_m/s}$$ in which $$v$$ is the measured rate (the y values of the data), $$s$$ the concentration of substrate (the x values of the data), $$v_m$$ the maximal rate and $$K_m$$ the Michaelis constant. [...] Now, with the fit, we have reasonable values for $$v_m$$ (vm) and $$K_m$$ (km). But, for publication, one would want to generate "smooth" curve going through the lines... Saving the curve from "Data.../Save all" doesn't help, since the data has as many points as the original data and looks very "jaggy" (like on the screenshot above)... So one needs a curve with more data points.

### Gerrit code review tool taken offline after suspected admin account compromise

Gerrit has been taken offline after malicious activity was flagged on the open source code collaboration platform. The web-based Git code review service was disabled two hours after project maintainers were alerted to a suspected security breach on Tuesday morning (October 20). “We believe an admin account in Gerrit was compromised allowing an attacker to escalate privileges within Gerrit,” said Clark Boylan in a service announcement issued later that day. “Around 02:00 UTC October 20 suspicious review activity was noticed, and we were made aware of it shortly afterwards. “The involved account was disabled and removed from privileged Gerrit groups. After further investigation we decided that we needed to stop the service, this happened at about 04:00 UTC.”

### Sailfish OS now lets you share your Mobile Linux device

Use Multi-account sign-on on your Mobile Linux device. Jolla has Introduced this feature as part of its latest Sailfish OS 3.4 Pallas-Yllästunturi release software update. Having the ability to share a mobile device amongst your family or co-workers can be very useful. This is something that mobile manufacturers such as Motorola have been doing on their smartphones and Samsung on their tablets for a while now. What I mean by sharing is that everyone can have their own Independent accounts set up on the device - once logged in they have access to their OWN emails, social media accounts, pictures, etc. It's THEIR device.

### Setup KOrganizer with Operation Tulip Online Calendar

Anyone using Kubuntu will see KOrganizer the best desktop calendar and anyone knows internet knows NextCloud technology a complete solution to live online. Now we find Operation Tulip a generous online service for data storage and calendar based on that technology. This tutorial explains how to synchronize your desktop and your online calendar the easy way. KOrganizer is a complete desktop calendar similar to Mac's or Windows' built-in Calendar application. It works with multiple accounts and supports the popular iCalendar format. It supports colors and categories and is able to work offline. It is developed by KDE. NextCloud is latest computing technology in the field of online storage developed from the earlier one named OwnCloud. Any company or organization with enough capacity can make their own Google Online Services such as office suite, storage, mail, calendar, video call, and more simply by installing this on their server. NextCloud is Free Software. It is founded by vice president of KDE.