🔔 Low Space

Script 
 #!/bin/bash

mingigs=20
avail=$(df | awk '$6 == "/" && $4 < '$mingigs' * 1024*1024 { print $4/1024/1024 }')

if [ -n "$avail" ]; then
 curl \
 -H "Title: Low Disk Space" \
 -H "Priority: urgent" \
 -H "Tags: warning,cd" \
 -d "Hello TTBB! Only $avail GB available on the root disk. Better clean that up." \
 https://notify.boreux.work/raspberrypi?auth=<TOKEN>
fi
 
 Cron 
 0 * * * * root /bin/bash /root/ntfy/low-disk-space.sh