Could not open lock file
/var/lib/dpkg/lock

 

while using apt-get install or apt-get upgrade  and also trying to install any software  through apt
command getting an error like
[email protected]:~$ apt-get install yum
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?
Now what you have to do is simply type sudo su   Now you have super user privaliges.

[email protected]:~$ sudo su
ro[email protected]:/home/lubuntu#

Now just type apt-get update this is for updating your source list

[email protected]:/home/lubuntu# apt-get update
Ign cdrom://Lubuntu 15.10 _Wily Werewolf_ – Release i386 (20151021) wily InRelease
Ign cdrom://Lubuntu 15.10 _Wily Werewolf_ – Release i386 (20151021) wily/main Translation-en_US
Ign cdrom://Lubuntu 15.10 _Wily Werewolf_ – Release i386 (20151021) wily/main Translation-en
Ign cdrom://Lubuntu 15.10 _Wily Werewolf_ – Release i386 (20151021) wily/multiverse Translation-en_US
Ign cdrom://Lubuntu 15.10 _Wily Werewolf_ – Release i386 (20151021) wily/multiverse Translation-en

after finishing this now you can get any software by

apt-get install *******

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