execute a command as another user

-p prompt   The -p (prompt) option allows you to override the default password prompt and use a custom
            one.  The following percent (`%') escapes are supported by the sudoers policy:

-v          When given the -v (validate) option, sudo will update the user's cached credentials,
            authenticating the user's password if necessary.  For the sudoers plugin, this extends the
            sudo timeout for another 15 minutes (or whatever the timeout is set to in sudoers) but does
            not run a command.  Not all security policies support cached credentials.