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The first step of the laptop sanitation process is to erase data by typing "sudo shred /dev/sda -f -v --iterations=2" command.
So what does "sudo" mean? Thanks to David Rotter for providing us a complete answer during our last QA workshop.
Sudo is a command in Unix/Linux that allows you to run programs with different security permissions than your account currently has. By default Sudo runs programs with administrator rights, as the "superuser" ("root"). Sudo stands for "substitute user do" or "superuser do".