Thank you for taking the time to report this bug and help to improve
Ubuntu.
This bug has been fixed in version 0.97-28 of the grub package:
grub (0.97-28) unstable; urgency=low
* Remove second /sbin/update-grub warning. Apparently, it is
impossible to detect /etc/kernel-img.conf syntax
*** This bug is a duplicate of bug 78552 ***
https://bugs.launchpad.net/bugs/78552
** This bug has been marked a duplicate of bug 78552
/sbin/update-grub complains about being run instead of /usr/sbin/update-grub
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update-grub manpage uses /sbin rather than /usr/sbin
*** This bug is a duplicate of bug 78552 ***
https://bugs.launchpad.net/bugs/78552
bug #78552 makes no mention of man pages, and is a lousy duplicate for
this bug
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update-grub manpage uses /sbin rather than /usr/sbin
https://bugs.launchpad.net/bugs/107741
You received this bug
I can confirm this, and this is a documentation specific bug, not a
duplicate of 78552.
** This bug is no longer a duplicate of bug 78552
/sbin/update-grub complains about being run instead of /usr/sbin/update-grub
** Changed in: grub (Ubuntu)
Status: Unconfirmed = Confirmed
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