Resetting Drained Slurm Node

After barking up the wrong tree for a while I discovered via StackExchange how to reset a Slurm Node reporting as drained. Run the scontrol command then update the node as shown in the following example commands (amend the word jacob here to the name... » More

Apache: unable to open logs

In the annals of "Everyday is a learning day". I have an Apache server hosting student websites, and the number of websites grew to over 700 within a day and Apache was complaining with error: unable to open logs It took a little while to narrow down... » More

Customise the Unity Launcher from Command Line

I am rolling out some Linux desktops, specifically Ubuntu, and I wanted to customize the icons available in the Unity Launcher. I wanted to remove the LibreOffce Calc and Impress icons and the darned 'Amazon' one, so: Create a new gschema override... » More

Locating Excessive Inode Usage

The command to list the directories using the most inodes is: find . -printf "%h\n" | cut -d/ -f-2 | sort | uniq -c | sort -rn However, I first needed to narrow down the directory under root that might be causing the problem: df -i showed that the... » More

Screen Annotation on Linux

I was testing a HP EliteBook 2730p with Linux Mint 17.2. The laptop/netbook/tablet comes with a touchscreen and stylus. USB booting did not work for me but I was able to network/pxeboot an installation. When it came to drawing on the touchscreen I was... » More