making sudo work on lion

gistfile1.txt

from: http://forums.macrumors.com/showthread.php?t=447812

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Reboot into single user mode (hold Option S while booting until it switches to text mode)

At the single user prompt, type: /sbin/fsck -fy

This checks the filesystem integrity

Then type: /sbin/mount -wu /

This mounts the root filesystem as read/writable.

Next type: /bin/chmod 1775 /

This will correct the permissions for your / directory

Type: /bin/sync

This will make sure the change is written to the filesystem

Type: exit