sudo: /usr/share/doc/libdvdread4/install-css.sh: команда не найдена [дубликат]

sudo apt-get install kubuntu-restricted-extras

, похоже, работает нормально

sudo /usr/share/doc/libdvdread4/install-css.sh

дает:

sudo: /usr/share/doc/libdvdread4/install-css.sh: command not found

имеют запустите sudo apt-get update несколько раз

как исправить? как получить libdvdread4 для установки?

michaeleric@michaeleric-Inspiron-1750:~$ sudo apt-get install libdvdread4  
[sudo] password for michaeleric:   
Reading package lists... Done  
Building dependency tree          
Reading state information... Done  
libdvdread4 is already the newest version (5.0.3-1).  
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.  
michaeleric@michaeleric-Inspiron-1750:~$ sudo /usr/share/doc/libdvdread4/install-css.sh  
sudo: /usr/share/doc/libdvdread4/install-css.sh: command not found  
michaeleric@michaeleric-Inspiron-1750:~$   

========================================== ==

sudo apt install libdvdcss2 libdvdread4 libdvdnav4 ubuntu-restricted-extras

похоже на установку

michaeleric@michaeleric-Inspiron-1750:~$ sudo /usr/share/doc/libdvdread4/install-css.shsudo: /usr/share/doc/libdvdread4/install-css.sh: command not found

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