Last File to Different Path

#!/system/bin/sh
#Created by AraafRoyall
##############################

source="/PATH"
destination="/PATH"
format="png"

# •••••••••••••••••••••••••••••••••••••••••••••

lf=$(ls -t "$source" | grep -E "\.($format)$" | head -n 1)

if [ -z "$lf" ]; then
  echo "No $format files found in $source."
  exit 1
fi

mkdir -p "$destination"
mv "$source/$lf" "$destination"

echo "$format file moved to $destination successfully."