Running as root ( was Re: Change Permissions (snip)..Problem Solved )
peter.garrett at optusnet.com.au
Tue Jan 9 23:44:32 UTC 2007
On Tue, 09 Jan 2007 14:05:20 -0600
mtyoung <tuxman at knology.net> wrote:
Yes, I do realize the danger of being a root user. That's why I said
"logging in as root when needed".
Note that I immediately logged back in as a normal user after solving
I found it easy to tell that I was in root, since the desktop was
OK - but most people would avoid doing that. It gives a window of
opportunity to attackers ( although a short one, and of course your
machine should be protected in other ways, like firewalling and access
controls to services etc. ) More simply, it is incredibly easy to make a
mistake dragging and dropping stuff around, for example - say you
accidentally moved your /etc/ directory to your /home directory....
don't laugh, stranger things have happened ;)
Of course you can make similar mistakes on the command line, but it is
less likely - running sudo or sudo -i should remind you that now is a time
to be careful. Personally, I change the colour of the prompt for root so
that when I run "sudo -i" if I need to have a root shell for a series of
commands, it is suddenly a lurid green :) You can do this by uncommenting
the following section in /root/.bashrc : ( /root is root's "home"
# Comment in the above and uncomment this below for a color prompt
"The above" refers to the block that begins
# set a fancy prompt (non-color, unless we know we "want" color)
and ends with
Of course, a # will comment any line, to disable it.
> In the particular problem above, can you suggest a better way that I
> could have solved the problem? I'm sure I'd learn something from it.
James has, as usual, posted an excellent solution, which you have of
course seen and responded to :)
With regard to the permissions "letters" - u=user g=group o=others and +
adds a permission, - removes a permission. r=read , w=write , x=execute,
or for folders/directories, x=access
But James has pointed you to a good URl in his usual thorough manner :-)
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