Using an Arduino UNO and 8 strips of Neopixel ws2812 strips (60 LED/m) I was able to recreate the awesome LED sign created by Josh here: https://youtu.be/k-SYMPO8-f8 Needed some text to test it an...

By default, if the new installer is utilized when deploying Ubuntu server 18.04, the /etc/apt/sources.list will contain only two entries. This doesn’t cover much, so to expand it to be a bit more u...

If your system is using netplan for network configuration, change settings in “/etc/netplan/50-cloud-init.yaml”: DHCP: jonas@kube-c1-n3:~$ cat /etc/netplan/50-cloud-init.yaml network: etherne...

If one disconnects an external monitor / projector the Atom editor window has a tendency to show up outside of the screen boundaries – just as if the external monitor was still attached. It took a ...

Add the following line at the end of /etc/sudoers (just after “#includedir /etc/sudoers.d”): username ALL=(ALL) NOPASSWD: ALL In my case: #includedir /etc/sudoers.d jonas ALL=(ALL) NOPASSWD: ALL

jonas@yggdrasil:~$ sudo swapon --show NAME TYPE SIZE USED PRIO /dev/dm-2 partition 11.9G 0B -1 jonas@yggdrasil:~$ jonas@yggdrasil:~$ sudo free -m total used ...

To use ipmitool with iDRAC, make sure “-I lanplus” is included in the command: ipmitool -H idrac-ip -U root -P calvin -I lanplus sdr list

Handy way to wipe a USB drive in Linux using dd and /dev/urandom: jonas@yggdrasil:~$ sudo dd if=/dev/urandom of=/dev/sdc bs=4k dd: error writing '/dev/sdc': No space left on device 15163393+0 reco...

Add current user to the “docker” group: sudo usermod -aG docker ${USER} Create a new shell or open new terminal for the change to take effect.