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http://askubuntu.com – Go to Ubuntu Software Center. Edit > Software Sources Change the server from the default value to some other value. Click Close. You'd need to enter your password. Run sudo apt-get update to check. Enable the universe repo: open the Software center. Click on edit and then software sources to open the software sources window. Enable the Community-maintained free and open-source software (universe). option. After that in terminal: sudo apt-get update && sudo apt-get install libboost-all-dev automake I did both the steps but when I still try to run this command: sudo apt-get (HowTos)