If you have been trying to ZIP multiple directories into individual files, this simple command will do just that for you.
ZIP Without Sub directories
for dirname in */; do zip "${dirname%/}.zip" "$dirname"; doneZIP With Sub directories
Specifying the -r parameter to the zip program it will also include any sub directories of the individual directories that you are creating the individual zip files for.
for dirname in */; do zip -r "${dirname%/}.zip" "$dirname"; done