DrDoc - 4:30 pm on Aug 31, 2013 (gmt 0)
sudo also implies accessing the "powers" and rights of a user other than self, typically one with more power and rights ...
Sometimes a command will be rejected by the system. Say I want to create a subfolder in a folder where I only have read access. The command will fail. Issuing the same command, preceded by
sudo, will be successful, since
sudo will invoke the powers of the
root user ...
The latter is what they are referring to here. Command did not work, so invoke