Could not get lock /var/lib/dpkg/lock-frontend – open (11: Resource temporarily unavailable)E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), is another process using it?
If you getting such error you can easily resolved this in just few simple steps
explanation; When I trying to install vsftpd package i get this error:
root@kali:~# apt-get install vsftpd E: Could not get lock /var/lib/dpkg/lock-frontend - open (11: Resource temporarily unavailable) E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), is another process using it?
Now see how i resolved this problem
root@kali:~# rm /var/lib/apt/lists/lock root@kali:~# rm /var/cache/apt/archives/lock root@kali:~# rm /var/lib/dpkg/lock*
You can also run one more command:
killall apt apt-get
After running the above command the problem solved.
You can see the above image too or see the below output to analyse the truth.
root@kali:~# apt-get install vsftpd Reading package lists... Done Building dependency tree Reading state information... Done The following NEW packages will be installed: vsftpd 0 upgraded, 1 newly installed, 0 to remove and 1455 not upgraded. Need to get 153 kB of archives. After this operation, 357 kB of additional disk space will be used. Get:1 http://ftp.yzu.edu.tw/Linux/kali kali-rolling/main amd64 vsftpd amd64 3.0.3-11 [153 kB] Fetched 153 kB in 5s (32.2 kB/s) Preconfiguring packages ... Selecting previously unselected package vsftpd. (Reading database ... 340483 files and directories currently installed.) Preparing to unpack .../vsftpd_3.0.3-11_amd64.deb ... Unpacking vsftpd (3.0.3-11) ... Setting up vsftpd (3.0.3-11) ... [vsftpd.conf:1] Line references path below legacy directory /var/run/, updating /var/run/vsftpd/empty → /run/vsftpd/empty; please update the tmpfiles.d/ drop-in file accordingly. update-rc.d: We have no instructions for the vsftpd init script. update-rc.d: It looks like a network service, we disable it. Processing triggers for systemd (239-10) ... Processing triggers for man-db (2.8.4-2+b1) ...