Thanks. Fixed it by mounting the drive via Live CD as per your suggestion.<div><br></div><div>As an aside the README in the sudoers.d directory advised me to read the sudoer man page. Not sure I understood it all but it was informative and a reminder of the depth of information available - which I often forget.</div>
<div><br></div><div>Howard <br><br><div class="gmail_quote">On 17 April 2012 09:59, Simon Greenwood <span dir="ltr"><<a href="mailto:sfgreenwood@gmail.com">sfgreenwood@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br><br><div class="gmail_quote"><div><div class="h5">On 17 April 2012 09:50, Howard Close <span dir="ltr"><<a href="mailto:howard.close@gmail.com" target="_blank">howard.close@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi,<div>My Ubuntu 11.04 installation has suddenly blocked my access to root priveleges.</div><div><br></div><div>sudo foobar</div><div><br></div><div>gives</div><div><br></div><div><div>sudo: /etc/sudoers is mode 0640, should be 0440</div>
<div>sudo: no valid sudoers sources found, quitting.</div></div><div><br></div><div> Clearly I cant chmod /etc/sudoers without superuser priveleges.</div><div><br></div><div>Not sure what has happened - any suggestions?</div>
<span><font color="#888888">
<div><br></div><div></div></font></span></blockquote></div></div><div>It sounds like the privileges of /etc/sudoers has been changed - could be accidentally, could be a bad package or something like that. Do a ls -l /etc/sudoers to see what exactly has happened.</div>
<div><br></div><div>The only real fix is to boot from a live CD or USB, mount your system drive and change it back to the correct permissions. The repair system option *might* do it but I'm not sure.</div><div><br></div>
<div>s/</div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span><font color="#888888"><div> </div></font></span></blockquote></div><span class="HOEnZb"><font color="#888888">-- <br>
Twitter: @sfgreenwood<div>
"Go on Bobby, both barrels"<br></div><br>
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