Here's what works for me on macOS Ventura:

# List all your backup (replace with your path)
tmutil listbackups -d /Volumes/BUGSBACKUP

# Delete a specific backup (replace with your path and your timestamp)
sudo tmutil delete -d /Volumes/BUGSBACKUP -t 2022-04-05-151520

Here's what works for me on macOS Ventura:

# List all your backup (replace with your path)
tmutil listbackups -d /Volumes/BUGSBACKUP

# Delete a specific backup (replace with your path and your timestamp)
sudo tmutil delete -d /Volumes/BUGSBACKUP -t 2022-04-05-151520

Oh, and I had to go to System Preferences - Privacy & Security first to allow my terminal (I use Hyper) a Full Disc Access.

Here's what works for me on macOS Ventura:

# List all your backup (replace with your path)
tmutil listbackups -d /Volumes/BUGSBACKUP

# Delete a specific backup (replace with your path and your timestamp)
sudo tmutil delete -d /Volumes/BUGSBACKUP -t 2022-04-05-151520

I was too lazy to make a bash script but it shouldn't be too difficult.

Here's what works for me on macOS Ventura:

# List all your backup (replace with your path)
tmutil listbackups -d /Volumes/BUGSBACKUP

# Delete a specific backup (replace with your path and your timestamp)
sudo tmutil delete -d /Volumes/BUGSBACKUP -t 2022-04-05-151520