apt-get wait for lock release

If you are running apt-get commands on terminal and want to install stuff on the software center, the center says it waits until apt-get finishes. I wanted to know if it is possible to do the same but on the terminal, i.e., make apt-get on the terminal wait until the lock is released. I found [this link](https://askubuntu.com/questions/132059/how-to-make-a-package-manager-wait-if-another-instance-of-apt-is-running) , that uses `aptdcon` to install stuff. I would like to know if: - Is it really not possible to do with apt-get? - Is aptdcon compatible with apt-get, i.e., can I use both to install stuff without borking the system?