When you forgot to use sudo in linux bash

Save yourself some seconds

Once in a while we tend to make that mistake of forgetting to put sudo first when trying to run a command that requires root permission. When this happens we tend to start all over again by running the same command again.
Fortunately there's is a solution that saves you some seconds:
Just type sudo !!
Yes! That's it. The same command will be run again but with sudo this time.
Just be sure you have the root privileges.
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