پاسخ : مشکل در نصب پکیج ها

دستور رو احتمالا اشتباه میزنید . دستور درست برای بروزرسانی مخازن این هستش :
apt-get update

E: Could not open lock file /var/lib/apt/lists/lock - open (21: Is a directory)
E: Unable to lock directory /var/lib/apt/lists/
E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied)
E: Unable to lock the administration directory (/var/lib/dpkg/), are you root?