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I am trying to run sudo apt-get upgrade but it is showing the below error message:

E: Could not open lock file /var/lib/dpkg/lock-frontend - open (2: No such file or directory)
E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), are you root?

Here are the solutions I have tried :

  1. I have tried, "sudo apt-get update"

  2. I have also tried to delete the locked files using the commands:

    sudo rm -r /var/lib/dpkg/lock-frontend
sudo rm -rf /var/lib/dpkg/lock

    but it is showing the error that "no so such file or directory".

  3. I tried to kill all the running process using the command:

    ps aux | grep -i apt    
sudo kill -9 <process id>
sudo killall apt apt-get

How can I solve this issue?

Kulfy
  • 18,154
Subhanshu Kumar
  • 31
  • 1
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2 Answers2

1

The right solution is pasted below, run the below commands and it should fix the problem.

sudo mkdir -p /var/lib/dpkg/{alternatives,info,parts,triggers,updates}

sudo cp /var/backups/dpkg.status.0 /var/lib/dpkg/status


apt-get download dpkg


sudo dpkg -i dpkg*.deb


apt-get download base-files


sudo dpkg -i base-files*.deb


sudo apt-get update


sudo apt-get check
Soren A
  • 7,191
Suhas R
  • 11
0

You most likely have another process that is using the package manager.

Close any other terminal instances and any GUI package managers. If you are not sure which process/program currently has those privileges, a reboot should fix the problem.

Caleb
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