unzip multiple files into directories

unzipper.sh

# taken from http://stackoverflow.com/questions/11289551/argument-list-too-long-error-for-rm-cp-mv-commands#answer-11289567

for f in *.zip; do
    # Creating a name for the new directory.
    new_dir="${f##*/}"
    new_dir="${new_dir%.*}"
    # Creating the directory if it doesn't already exist.
    mkdir -p "$new_dir"
    # Unzip contents of "$f" to "$new_dir"
    unzip -d "$new_dir" -- "$f"
done