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Pipe Password to Sudo

So while trying to create an automated script for Docker to start running my container, I need to pass root’s password to sudo in order to run docker start _containerID_. The way to do is given below -


The command to start Docker service was -

$ echo "SECRET" | sudo -S service docker start

And that was all, for me to pass the password to sudo without actually writing the password again!

Thing to note here is that passing -S makes sudo to read password from stdin.

Original Question on Unix - StackExchange