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Upgraded to Julia 1.0.1

I’m going to start the 100 days of code again. First, followed the instructions in https://julialang.org/downloads/platform.html and completed installation of Julia 1.0.1 on CentOS 7.5.

Then installed iJulia, a Julia-language backend combined with the Jupyter environment, as below:

using Pkg
Pkg.add("IJulia")

Then launched an iJulia notebook in Konqueror.

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sudo options

Use sudo -i to create an interactive root shell on CentOS. Instead of $, you will see #, indicating that you have root access. Very useful when you have to run a sequence of various commands which require root access. You won’t have to type sudo before each command.

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Plotting with JuliaLang

So many plotting packages in Julia. First, tried Plots.jl – Julia’s metaplotting package that can use various plotting packages as backends. However, I’m now using the UnicodePlots package because that can output a parametric chart.

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Flatpak on CentOS 7

Discovered Flatpak last week. It’s making the process of installing applications on CentOS a lot easier. I installed Flatpak, then got GNU Octave from Flathub. Flathub is where you can get apps to run inside Flatpak, without having to look for a version that will run on your specific Linux Distro. I now have GNUOctave installed and running, after several failed attempts before Flatpak.

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VLC on CentOS

Got VLC from the Nux Dextop repo.

VLC can be installed in yum by the following commands:
$ sudo yum -y install epel-release && sudo rpm -Uvh http://li.nux.ro/download/nux/dextop/el … noarch.rpm

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Anaconda on CentOS 7

Finally got round to installing Anaconda (the Python distribution) on CentOS. I followed this article at Linux Hint. Launched Anaconda Navigator from Terminal, then created new environment. Installed the git and Jupyter packages into it. Opened a terminal window in the new environment. Everything is working fine so far. Last year had random crashes when running Anaconda on OS X, then I installed it on Ubuntu in Virtual Box. Anaconda worked fine, except for the slowness which I expected from a virtual environment. Now that I’ve installed it on a machine dedicated to CentOS, I’m expecting it to work ideally.

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Firefox Quantum on Centos 7

This morning, installed Firefox 57 or Quantum via Konsole. Installing a software package on a Linux system is normally done from a terminal window (such as Konsole on CentOS), in contrast to Windows or OS X where an exe or dmg file is simply double-clicked to start the installation. In this case, I downloaded the compressed tar file from the Firefox site, then used the command to extract it in Konsole.

I will try Quantum for a while before making it the default version.