Jupyter Notebook Server installation

Jupyter Notebook Server installation

Create a new user For this example, we will be using a Linux username hyperion. In order to create a new user in Linux and set up a password, use the following commands: Note: -m is required in order to create user’s home directory the command to remove the user is: userdel hyperion To make sure that the user has been created, […]

Logging GNU screen command output

Logging GNU screen command output

Previously I described how to use GNU screen to run bash commands in background. In addition to that, if sometimes it happens that a detached command terminates before completion, we would like to have logs for that command, e.g., in order to determine why and when an error occurred. This post explains how to log the progress of a command […]

One sample t-test in Excel

One sample t-test in Excel

Recently I needed to quickly perform a one sample t-test in an Excel spreadsheet. Unfortunately, this functionality is not implemented in Excel by default. However, I found a very nice post by Zach at Statology on how to calculate this test using some build-in Excel functions and objects. For my convenience what I did was to put the whole procedure […]

Detaching a bash command with GNU screen

Detaching a bash command with GNU screen

Sometimes running a bash command on the server can take several hours to complete. In such cases you would like to run the command in background and close the terminal from which the command was started (without terminating the process itself). The best way to achieve that is to use GNU screen’s detaching utility. In order to run and detach […]

PsychoPy – a basic example

PsychoPy – a basic example

PsychoPy is an excellent tool for preparing psychological experiments in Python. However, it seems that entry-level examples one can find in the web are rather sophisticated. Hence, I prepared this basic example featuring: Installing PsychoPy on Linux Displaying a simple stimulus Simplest possible keyboard event Installing PsychoPy on Linux Open a terminal (5 Ways to Open a Terminal Console Window […]

How to use FreeSurfer – Part 2

How to use FreeSurfer – Part 2

Introduction In this chapter, we are going to take a deep dive into FreeSurfer’s output and make some clarifications about it. After data processing from in Part 1, you should see something like this: We will mainly focus on folder “stats” because it contains files with plain text. Which is good for some visualizations and analyses. I will go through […]

(Auto)start application as a service in Linux

(Auto)start application as a service in Linux

Two examples how to autostart services in Linux will be presented here. To run applications you have to use systemd suite. Systemd configuration files are stored at: Jupyter Create a new file at: Copy-paste the following configuration there: Where: $USER — is a username who owns the resources containing you instance/virtual environment $VENV_ID — ID of your virtual environment Start […]