Chunkywizard wrote: 
> Hi JackOfAll,
> 
> A really basic question (which I'll add to the FAQ). When ever you do an
> update you write 'sudo ...'. I'm guessing this is a command line
> instruction you need to run on the Wandboard to update it. How do you
> input this? Do you do aomthing like Telnet into the board using PuTTY?
> Also setup for PuTTY you use the ip.address of the board and do you need
> a username and password? As you can tell I have a very basic knowledge
> of such things but I think even basic users would like to keep their
> board up to date and so I will write up a few instructions if you point
> me in the general direction. 
> 
> Cheers
> 
> CW

Most linux systems support multiple users, most of which have limited
"permissions" they can only do certain things. There is a "super user"
(usually "root") which can do anything. There is a command called "su"
which stands for set user, which changes a terminal to a different user.
If you don't give a user it changes to root, which usually requires a
special password, but is also somewhat of a security danger. 

sudo stands for set user do, it implements an su, then runs the one
command, then goes back to the original user. If the user is added to a
special group you don't need a password to run a sudo. This is the way
CSOS is setup, the "fedora" user can run sudo without a password. 

So pretty much anything which requires modifying system files needs to
be run with sudo. 

John S.


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