bind-load-zone.sh

This script can be used to increment, sign and reload a domain in BIND 9. It can take a signed or unsigned domain as an argument, and will handle it appropriately.
Written and tested on Debian 9-12.

The script does the following:

1. Increments the serial of the domain's zone file
   
2. Checks if the domain is signed by looking in $BINDZONECONF
   
3. Re-signs the domain (if it was previously signed)
   
4. Reloads BIND for the domain (rndc reload [DOMAIN])