execute a command as another user

-s [command]
            The -s (shell) option runs the shell specified by the SHELL environment variable if it is set
            or the shell as specified in the password database.  If a command is specified, it is passed
            to the shell for execution via the shell's -c option.  If no command is specified, an
            interactive shell is executed.

-n          The -n (non-interactive) option prevents sudo from prompting the user for a password.  If a
            password is required for the command to run, sudo will display an error messages and exit.