# Apt Package manager ## Problem with lock file If you get the error : ``` E: Could not get lock /var/lib/dpkg/lock - open (11 Resource temporarily unavailable) E: Unable to lock the administration directory (/var/lib/dpkg/) is another process using it? ``` You can try two soltutions. ### Soft Kill the process owner. `pgrep -a apt` `sudo kill processnumber` ### Hard Erase the file. `sudo rm /var/lib/apt/lists/lock`