My PHPmyadmin (PMA) install was stuck. I started a new session and when doing apt-get purge phpmyadmin I got:

E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable).

E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?

I ran these in Google and found two issues here; Highest answers suggest removing lock file (as well as it's cached version), but that didn't help:

up vote 2 down vote accepted

This answer should be tried as well for Ubuntu 16.04, I would advise to try it second:

cd /var/lib/dpkg/info/
sudo rm -r phpmyadmin.*
sudo apt-get clean
sudo apt-get update
phpdismod mcrypt mbstring
service apache2 restart
sed -i 's/Include \/etc\/phpmyadmin\/apache.conf/ /g' /etc/apache2/apache2.conf 
apt-get purge phpmyadmin -y
apt autoremove
  • Attention: you might have to use sudo in other commands informed above, otherwise you might get "permission denied" message. – Marcelo Ágil Nov 4 at 0:22

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