Floppy Boot, Filesystem, and Diags (was Re: 3.5" floppy disk revisited)
Clarence Dold
dold at mitisft.Convergent.COM
Sat May 6 04:02:19 AEST 1989
in article <777 at jonlab.UUCP>, jon at jonlab.UUCP (Jon H. LaBadie) says:
> I would just like to point out that on most unix systems, mv is also
> simply a link to cp and ln. It could have been implemented this way
> on the UNIX-PC also, but the implementers chose to give us two
> identical programs in /bin. One is the linked cp and ln, the other
> is mv. They are byte for byte identical. The only difference
> is the permissions. Mv is set uid'ed.
>
> If space becomes a premium on the floppy, a few blocks could be saved
> by linking mv to cp and ln, then changing permissions on them to
> match /bin/mv on the HD (4755, root owner).
I don't think I would want /bin/mv as setuid root on my system.
Kind of eliminates permissions on a directory.
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Clarence A Dold - dold at tsmiti.Convergent.COM (408) 434-5293
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