When you run a command in the terminal, and realize it requires superuser permissions, use the following command to re-run the command as superuser:
Here is an example scenario:
apt-get install myapplication (permission denied) sudo !!
The best part is that you can use this to prefix your command with anything. In the example below, I forgot to put
cd in front of my file path.
nicolas@nicolas-Revo ~ $ Backup No command 'Backup' found, did you mean: Command 'rackup' from package 'ruby-rack' (universe) Command 'backup' from package 'openafs-client' (universe) Command 'packup' from package 'packup' (universe) Backup: command not found nicolas@nicolas-Revo ~ $ cd !! nicolas@nicolas-Revo ~/Backup $