Welcome!
This is a place for errata broadly related to personal and professional interests.
Check out some specific pages like quotes and map of active tropical cyclones.
If it can be destroyed by the truth, it deserves to be destroyed by the truth. ⇨
“Always take sides. Neutrality helps the oppressor, never the victim. Silence encourages the tormentor never the tormented." ⇨
“I am so tired of waiting. Aren't you, for the world to become good and beautiful and kind? Let us take a knife and cut the world in two-- and see what worms are eating at the rind." ⇨
Recent Posts
16 Nov 2020
If you have ever had a need to move the output of a Linux console command to your clipboard, xclip is the solution!
To copy a file’s contents to the standard “ctl+c/v” clipboard buffer issue you can following this command:
xclip -sel clip your-file-path
The most useful feature is reading from a stdin pipe:
head my-file-path | xclip -sel clip
…and then your ready to paste into an email or Slack chat.
23 Sep 2019
Singularity Container System for HPC
At work I had a task to port the WRFv4 atmospheric model that we currently run in the office, from a Docker container, up to the Lonestar5 (LS5) supercomputer at the Texas Advanced Computing Center (TACC). My first impulse was to simply replicate the Dockerfile steps that we use in a simple bash script to natively build the required WRF executables.
Since I always forget the module load commands, I opened up the LS5 documentation. In doing so, I noticed that a recent update system update provides support for “Singularity” containers. Somehow I missed the rising popularity and support for Singularity, but was intrigued because it attempts to solve several of the problems we deal with running parallel numerical models (MPI, GPU and queue/batch systems) with Docker containers. And so I went down the rabbit hole of researching and installing Singularity with the hopes of replicating our Docker-like container workflows in a way that will run on LS5.
2 Sep 2019
Shortcut to Website in Ubuntu 18.04 Dock
Create and populate the following file to add a dock shortcut to a website in Ubuntu using Ars Technica as an example. This will also enable the shortcut in the Gnome Shell search.
~/.local/share/applications/MyWebsite.desktop:
[Desktop Entry]
Comment=Ars Technica
Terminal=false
Name=Ars Technica
Exec=firefox https://arstechnica.com/
Type=Application
Icon=applications-internet
NoDisplay=false
To use Google Chrome instead, replace firefox with google-chrome if it is installed.
[Desktop Entry]
Comment=Ars Technica
Terminal=false
Name=Ars Technica
Exec=google-chrome https://arstechnica.com/
Type=Application
Icon=applications-internet
NoDisplay=false