adv(){
    echo -e "make sure to have this modules loaded: \n\tvboxdrv\n\tvboxnetflt\n\tvboxnetadp\n\tvboxpci"
    echo "you can simply add them to /etc/modules-load.d/virtualbox.conf with this command:"
    echo "# echo -e \"vboxdrv\\nvboxnetflt\\nvboxnetadp\\nvboxpci\" > /etc/modules-load.d/virtualbox.conf"
}

remove_slink(){
    # in previous version install script created symbolic links
    [[ -s /usr/local/bin/genymotion ]] && rm /usr/local/bin/genymotion
    [[ -s /usr/local/bin/genymotion-shell ]] && rm /usr/local/bin/genymotion-shell
}

post_install() {
    adv
}

post_upgrade() {
    remove_slink
    adv
}

post_remove() {
    remove_slink
}