AmirHossein Sojoodi

AmirHossein Sojoodi

PhD student in Computer Engineering at Queen's University

Setup Webmin

Published:
1 minute read

To install Webmin via apt-get, you must first add the Webmin repository to your sources.list file.

On your server, open the sources.list file in your favorite text editor. We will use nano in this tutorial:

sudo vim /etc/apt/sources.list

If you are prompted for a sudo password, enter your user’s password.

Now press Ctrl-W then Ctrl-V to navigate to the end of the file, then add the following lines to the file:

deb http://download.webmin.com/download/repository sarge contrib
deb http://webmin.mirror.somersettechsolutions.co.uk/repository sarge contrib

Now add the Webmin GPG key to apt, so the source repository you added will be trusted. This command will do that:

wget -q http://www.webmin.com/jcameron-key.asc -O- | sudo apt-key add -

Before installing Webmin, you must update apt-get’s package lists:

sudo apt-get update

Now run this apt-get command to install Webmin:

sudo apt-get install webmin

Log in to Webmin

In a web browser, access your server’s Webmin login page via its public IP address (the same IP address you used to login via SSH) on port 10000. By default, Webmin will start with SSL/TLS enabled, so you will need to use HTTPS to connect to it.

Open this URL in your web browser (substitute the IP address): https://server_IP_address:10000

You will be prompted with a warning that says your server’s SSL certificate is not trusted. This is because Webmin automatically generates and installs an SSL certificate upon installation, and this SSL certificate was not issued by a certificate authority that is trusted by your computer. Although your computer cannot verify the validity of the certificate, you know that you are, in fact, accessing your own server. It is fine to proceed.

Instruct your web browser to trust the certificate. If you are using Chrome, for example, click the Advanced link, then click the Proceed to server_IP_address (unsafe) link. If you are using Firefox, click I Understand the Risks, then the Add Exception… button, then the Confirm Security Exception button.

You May Also Enjoy

Utilize PTX Just-In-Time (JIT) Compilation in CUDA

4 minute read

Published:

In this post I’ve written about how to utilize PTX Just-In-Time (JIT) compilation in CUDA. PTX is a low-level assembly-like language that is used to represent the GPU code. The PTX code is then compiled to the machine code by the NVIDIA driver at runtime. This process is called Just-In-Time (JIT) compilation. But before I write about how to use PTX JIT compilation, I’ll provide some background on why you might want to use it.

Collection of my dotfiles (public version)

1 minute read

Published:

This is a collection of my dotfiles that I use on my Linux system. I have written about them in various posts, but I thought I can put them all in one place. You can checkout the github repository here, too.

Tmux Tips and Tricks

10 minute read

Published:

(If you are already familiar with tmux, and you are looking for a simple .tmux.conf, go to the end of this post.)

Setup LAMMPS

4 minute read

Published:

Large-scale Atomic/Molecular Massively Parallel Simulator (LAMMPS) is a classical molecular dynamics code that can be used to model atoms or, more generally, as a parallel particle simulator at various scales. The complete documentation of LAMMPS can be found here. In this post, I will provide a guide on how to setup LAMMPS on a Linux machine. My setup is on a cluster with NVIDIA GPUs, UCX, and OpenMPI. Also, we have a built-in module system to load the necessary modules.