Ubuntu

Posted June 23, 2022  ‐  2 min read

• LetsEncrypt Certbot SSL For Ubuntu
  • I've not tested it myself
  • Not sure which version of Ubuntu this works on. The Article is from mid-2020, so 20.04 LTS can be assumed.

Enable hibernate

Details in this SO thread

TL:DR :

• Use swapfile for Ubuntu 17 onwards
  • sudo dd if=/dev/zero of=/swapfile bs=1G count=8
  • OR sudo dd if=/dev/zero of=/swapfile bs=1M count=8192
• Add entry for the swapfile to /etc/fstab
• Update /etc/default/grub
  • GRUB_CMDLINE_LINUX_DEFAULT="quiet splash resume=UUID=XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX resume_offset=XXXXX"
  • Use offset from sudo filefrag -v /swapfile |grep " 0:"| awk '{print $4}'. I had to remove .. from the output
  • Use UUID of / from cat /etc/fstab
  • sudo update-grub
• Finally sudo systemctl hibernate : This did not work for me 😞 Keeping here for reference, hopefully someone finds it useful 🤞

Access Virtual Console

I had problems when my entire Desktop would become slow/unresponsive.
Normally I would kill some process to make the DE responsive, but I can't even reach the terminal app.

In such cases, Ctrl-Alt-F1 gives me access to virtual console.
Usually there are multiple consoles available from F1 to F6

F7 would bring you back to the DE.

Ubuntu.Budgie
Ubuntu.DDE