Today was originally used Xshell link local linux, but the link did not actively pop-up input user name and Password dialog box, Google searched, encountered the above problem.
The solution is as follows:
1. Terminal input PS aux, list process. Find the process containing the apt-get, and directly sudo kill PID.
2. Forced unlock, command
sudo rm/var/cache/apt/archives/lock
sudo rm/var/lib/dpkg/lock
2. Also prompts to install the Yum command:
Apt Install yum
3. Because I want to use the service sshd Start command, with yum install Openssh-server missing can not be installed, and search said Ubunt below as far as possible without Yum command, replaced Apt-get install Openssh-server Install well
4. Start the server sshd start
5. Pop-up Password box appears in Xshell
"Go" Ubunt install yum appears in Ubuntu solution "Unable to get lock/var/lib/dpkg/lock-open (11: Resource temporarily unavailable)" method