Linux on Werk Space

Headless operation

Mon, 13 Apr 2020 11:07:59 -0500

SSH server

The install of OpenSSH mostly follows the Ubuntu guide.

Install, sudo apt install openssh-server
Copy original configuration,
- sudo cp /etc/ssh/sshd_config /etc/ssh/sshd_config.original
Protect original configurationsudo chmod a-w /etc/ssh/sshd_config.original
Edit the configuration file, sudo nano /etc/ssh/sshd_config
Add the following to the configuration file while insuring that no other matching parameter is uncommented.

PermitRootLogin no
PubkeyAuthentication yes
UsePAM yes
X11Forwarding yes
AllowUsers your-user-name

Restart the service, sudo service sshd restart

Make certain you are able to connect to the server remotely before adding public key authentication.

Data science platform

Mon, 13 Apr 2020 11:08:30 -0500

Anaconda

Anaconda is a data science platform that supports Python and R. It comes with many packages that are needed to perform good data science.

Multi-user installation

Note the differences below, but this mostly follows [Anaconda’s Installing on Linux for multiple users] (https://docs.anaconda.com/anaconda/install/multi-user/#multi-user-anaconda-installation-on-linux).

Login as root, sudo -i.
Follow instructions but change the install directory to /opt/anaconda3.
Create a new groups, addgroup conda-grp.
Set the conda-grp as owner of the anaconda directory, chgrp -R conda-grp /opt/anaconda3.
Change read/write permsissions on the directory, chmod 770 -R /opt/anaconda3.
Add users to the group, usermod -a -G conda-grp youruser.
Logout root, exit.
Exit your shell session exit.
Start a new session.
Connect your user to the base environment

source /opt/anaconda3/bin/activate
conda init

Restart your session again.
Upon login, you should note (base) appears by your prompt.
Verify the installation, conda list which lists all of the installed packages.
Test python is from Anaconda, python. This starts the python shell with a heading that indicates the version and the source as Anaconda.
Quit the python shell, exit().
Update the conda package manager, conda update conda.
Update all packages, conda update --all.

Your Anaconda installation is complete and has fully functioning python environment. Now view the User guide. If you are working in the gui, start Anaconda Navigator, anaconda-navigator.

Linux

Wed, 08 Apr 2020 09:59:15 -0500

Overview

This computer is a general use computer, not a server. The basic install may be either the full Ubuntu desktop or my preference which is Lubuntu. Lubuntu is a lightweight version of Ubuntu, with a toned down graphical interface and no default installation of certain desktop software like an office suite.

I do not use the Ubuntu system as my primary computer but specifically for development and running of machine learning tasks. The machine learning tasks often take a lot of processing power and time, so expect the machine to be unavailable during those task runs.