[TUHS] observations on Unix v6's mount command

Mark Longridge cubexyz at gmail.com
Thu Mar 9 16:25:32 AEST 2017

I was trying to look at mini-unix so I mounted the disk image inside
unix v6 via:

/etc/mount /dev/rk4 /usr/mini-unix

and I noticed that if I ran the mount command as a user and not root
that /etc/mtab would not be updated (but it was updated as expected as
root). Of course /etc/mtab is owned by root :)

Then I noticed something else when I did an ls in the /usr directory:

drwxrwxrwx 20       31      368 Sep  3  1976 mini-unix

Normally I would see things like:

drwxrwxr-x  2 bin            48 May 13  1975 adm

What does the 31 mean?


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