How can I reboot a crashed Linux target system?

The best way to reboot a Linux target system is from its desktop environment or with the reboot command. If you can't do that because the Linux target system has crashed, you may still be able to safely reboot it using a magic SysRq key combination. TinyPilot can send the REISUB key combination for you using a script.

Adding the "send-reisub" script

To add the "send-reisub" script, connect to your device over SSH and run the following commands:

sudo curl \
  --silent \
  --show-error \
  --remote-name \
  --create-dirs \
  --output-dir "/usr/bin/tinypilot-user-scripts" \
  "https://tinypilotkvm.com/scripts/send-reisub" &&
  sudo chmod 755 "/usr/bin/tinypilot-user-scripts/" &&
  sudo chmod 744 "/usr/bin/tinypilot-user-scripts/send-reisub"

Using the "send-reisub" script

Once you've installed the "send-reisub" script, you can run it by opening the "Scripts" menu and pressing "send-reisub". The script will immediately send the relevant commands to the target computer, which should reboot after a short delay.