Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), is another process using it?

ps aux | grep -i dpkg

// Kill processes which are running
sudo kill -9 <pid>

// Restart the accounts daemon
sudo systemctl restart accounts-daemon

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3.5

Annu_tiger 95 points

                                    sudo kill -9 PID
sudo rm /var/lib/dpkg/lock-frontend
sudo apt update

Thank you! 2

3.5 (2 Votes)

4.6

Hellnar 100 points

                                    ps aux | grep -i apt

sudo kill &lt;process_id&gt;
# Check if the process was killed by running the &lsquo;ps aux | grep -i apt&rsquo; command. If it is still running, force kill it with SIGKILL signal:

sudo kill -9 &lt;process_id&gt;
# Another, easier way would be to use the killall command. This will kill all the instances of a running program:

sudo killall apt apt-get

Thank you! 5

4.6 (5 Votes)

Chris Moschini 125 points

                                    ps aux | grep -i apt

sudo kill &lt;process_id&gt;
# Check if the process was killed by running the &lsquo;ps aux | grep -i apt&rsquo; command. If it is still running, force kill it with SIGKILL signal:

sudo kill -9 &lt;process_id&gt;
# Another, easier way would be to use the killall command. This will kill all the instances of a running program:

sudo killall apt apt-get

Thank you! 0

3.86

Sarriesfan 95 points

                                    ps aux | grep -i apt

Thank you! 7

3.86 (7 Votes)

Lor F. 90 points

                                    sudo lsof /var/lib/dpkg/lock
sudo lsof /var/lib/apt/lists/lock
sudo lsof /var/cache/apt/archives/lock

Thank you! 0

3.81

Iraycd 85 points

                                    sudo lsof /var/lib/dpkg/lock
sudo lsof /var/lib/apt/lists/lock
sudo lsof /var/cache/apt/archives/lock

Thank you! 2

3.81 (16 Votes)

Barbara Paterson 115 points

                                    Method 1
ps aux | grep -i apt
sudo kill -9 &lt;process_id&gt;

Method 2

sudo lsof /var/lib/dpkg/lock
sudo lsof /var/lib/apt/lists/lock
sudo lsof /var/cache/apt/archives/lock

sudo kill -9 &lt;process_id&gt;

sudo rm /var/lib/apt/lists/lock
sudo rm /var/cache/apt/archives/lock
sudo rm /var/lib/dpkg/lock

sudo dpkg --configure -a

sudo apt update

Thank you! 1

4 (1 Votes)

4.25

Alex Podgaets 60 points

                                    sudo kill -9 PID
sudo rm /var/lib/dpkg/lock-frontend
sudo apt update

Thank you! 8

4.25 (8 Votes)

LostInComputer 125 points

                                    Method 1
ps aux | grep -i apt
sudo kill -9 &lt;process_id&gt;

Method 2

sudo lsof /var/lib/dpkg/lock
sudo lsof /var/lib/apt/lists/lock
sudo lsof /var/cache/apt/archives/lock

sudo kill -9 &lt;process_id&gt;

sudo rm /var/lib/apt/lists/lock
sudo rm /var/cache/apt/archives/lock
sudo rm /var/lib/dpkg/lock

sudo dpkg --configure -a

sudo apt update

Thank you! 8

4.5

Lupa 105 points

                                    ps aux | grep -i apt

Thank you! 4

4.5 (4 Votes)

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Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), is another process using it?

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