Using feh to move images from Desktop to Screensaver images directory

feh -FZ --no-jump-on-resort --draw-actions --draw-filename ~/Desktop -A "mv --backup=t %F /home/john/Desktop/unison/screensaver-images"
 

Package Suggestions for Debian Command Not Found

sudo apt-get install command-not-found
sudo update-command-not-found

Using ffmpeg to batch convert images from webp to png

for i in *.webp; do ffmpeg -i "$i" "${i%.*}.png"; done