zsebcsajszizsebcsajszi@zsebcsajszi-1011PX:~$ sudo apt-get install rar
[sudo] password for zsebcsajszi:
E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable)
E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?
Ezt írja ki a sudo apt-get install rar-ra