Some problems and solutions in the application of Ubuntu Apt-get dpkg

One. When installing software with sudo apt-get install, because the speed is too slow, want to change a software source, directly shut down the terminal, apt-get but the process is not finished, the result terminal prompt
: "E: Unable to get lock/var/lib/dpkg/lock–open (11: Resource temporarily unavailable)
E: Unable to lock the management directory (/var/lib/dpkg/), is there any other process that is consuming it? ”
The solution is as follows:
1 terminal input Ps-aux, list the process. Find the process containing apt '-get, direct sudo kill PID. Solve.
2 forced unlocking, command

1 2	sudo rm/var/cache/apt/archives/lock sudo rm/var/lib/dpkg/lock

Two. Debconf:dbdriver "config":/var/cache/debconf/config.dat is locked by another process: resource temporarily unavailable

[Email protected]:~$ sudo apt-get install squid
Reading Package List ... Complete
Analyzing Dependency tree for Package
Reading status information ... Complete
Squid is already the latest version.
0 packages were upgraded, 0 new packages were installed, 0 packages were uninstalled, 272 packages were not upgraded.
There are 2 packages that are not fully installed or uninstalled.
After decompression, the extra space of 0 B is consumed.
Do you want to continue? [Y/n]y
Debconf:dbdriver "config":/var/cache/debconf/config.dat is locked by another process: resource temporarily unavailable
Setting squid (2.7.STABLE9-4UBUNTU4) ...
Debconf:dbdriver "config":/var/cache/debconf/config.dat is locked by another process: resource temporarily unavailable
DPKG: Error processing squid (--configure):
Child process installed Post-Installation script returned error number 1
The Apport report was not written because the maxreports limit has been reached.
Dpkg: Dependency issues make the GADMIN-SQUID configuration work impossible to continue:
Gadmin-squid depends on squid; however:
Package squid is not yet configured.
DPKG: Error processing Gadmin-squid (--configure):
Dependency issues-Still not configured
The Apport report was not written because the maxreports limit has been reached.
An error occurred while processing:
Squid
Gadmin-squid
E:sub-process/usr/bin/dpkg returned an error code (1)

Workaround:

[Email protected]:~$ sudo lsof/var/cache/debconf/config.dat
Lsof:WARNING:can ' t stat () Fuse.gvfs-fuse-daemon file System/home/amw/.gvfs
Output information may incomplete.
COMMAND PID USER FD TYPE DEVICE size/off NODE NAME
Frontend 4250 root 4uW REG 7,0 40347 2966/var/cache/debconf/config.dat
[Email protected]:~$ sudo kill 4250
[Email protected]:~$ sudo apt-get autoclean
Reading Package List ... Complete
Analyzing Dependency tree for Package
Reading status information ... Complete
[Email protected]:~$ sudo apt-get clean
[Email protected]:~$ sudo apt-get autoremove

Some problems and solutions in the application of Ubuntu Apt-get dpkg