course_unzip.sh

# chmod +x course_unzip.sh
# sudo cp course_unzip.sh /usr/bin/course_unzip
# course_unzip <<archive_name.zip>> <<extract_folder_name>>


mkdir -p $2

unzip -qq $1 -d $2

for entry in "$2"/*
do
    newname="$(echo ${entry} |sed -e 's/.*Reference_Material_I*_//')" ;
    month="$(echo ${newname} | grep -oP -- '-.*-2' | sed -e 's/-//; s/-2//')" ;

    mkdir -p "$2/$month"

    echo "$2/$month/$newname"
    mv "$entry" "$2/$month/$newname"
done