Ubuntu Mandatory Uninstall Software

To unload cups as an example


One: List software lists, find the name of the software to be uninstalled
Command: dpkg--list


Second: Use the command to uninstall the relevant software, but found that cannot be deleted. The reason may be that the software is running, or because of a problem with what locks
Command: Apt-get--purge remove [name]



Third: Use the command to see if the software is running, if it is running, kill the process
Terminal input PS aux, list process. Find the process containing apt-get, direct sudo kill PID


Four: After kill process, uninstall or error, you need to force unlock
Command:
sudo rm/var/cache/apt/archives/lock
sudo rm/var/lib/dpkg/lock

Five: We can uninstall this time.
Command: Apt-get--purge remove [name]

Ubuntu Mandatory Uninstall Software