/var/cache/debconf/config.dat Is Locked by Another Process: Resource Temporarily Unavailable

a Debian apt-get error lock: 

/var/cache/debconf/config.dat Is Locked by Another Process: Resource Temporarily Unavailable

 

When issuing apt-get install commands you get this error output -

/var/cache/debconf/config.dat Is Locked by Another Process: Resource Temporarily Unavailable

(for example trying to install an app like debconf with apt-get install debconf), and thus unable to use apt-get nor dpkg, to fix this problem is to kill the associated process holding a lock on that file.

Issue command in terminal:

# fuser -v /var/cache/debconf/config.dat

then grab the PID number of that output (for an example PID number 9999),
and issue the command in terminal to kill the problematic process:

# kill -9 9999

it should now work and so you can now run apt-get and dpkg.

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