R. G. Newbury wrote: > R. G. Newbury wrote: > To recap, attempting to run a script, as root, with permissions 755 > produced a 'Permissions denied' error. > > The problem was that the partition was mounted with 'users,defaults' > options, and 'users' implies 'noexec' and overrides 'defaults' (which > implies 'exec'), > > Changing the line in fstab to 'defaults' and quick 'umount' and 'mount' > fixed the problem. another trick is this: mount -o remount /mount/point will change the mount options without actually unmounting the device in question. > Weird bit is that I was logged in as root..WHICH WAS MISLEADING. I am curious as to how you thought you had been misled... or was this an assumption that there are absolutely no restrictions on what the root user can do? > 'nonexec' is set, ALL users are denied execution privileges. (This is > most useful for security purposes in denying the use of programs on for > example a USB stick from compromising the system. There are other uses for it too. It is not all that uncommon to have /tmp and /home (and other mountpoints that should not really have executable files on them) mount noexec as well. > So, besides checking the permissions on a file, and the parent > directories, you have to check how the partition was mounted. > This will catch you when you are playing with something on a 'spare' > partition. Or when you change the fstab without realizing the implications! True. 'users' and 'user' are not default options and tbh I don't see the point of using them most of the time. IMO the only devices that users should be mounting/unmounting are physically removable devices. > Thanks to all for the pointers, which gave the solution. glad we could help :) Stuart -- Stuart Sears RHCA etc. "It's today!" said Piglet. "My favourite day," said Pooh. -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
