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From: mju@mudos.ann-arbor.mi.us (Marc Unangst)
Subject: Re: 386BSD: /bin -> /usr/bin reorganization
Message-ID: <ByCt8x.2xw@mudos.ann-arbor.mi.us>
Date: Fri, 27 Nov 1992 02:50:56 GMT
References: <1992Nov18.064604.2992@pool.info.sunyit.edu>> <CGD.92Nov18155017@eden.CS.Berkeley.EDU> <awesley.722734655@neumann.une.edu.au>
Organization: The Programmer's Pit Stop, Ann Arbor MI
Lines: 39
cgd@eden.CS.Berkeley.EDU (Chris G. Demetriou) writes:
>In article <DERAADT.92Nov17041728@newt.newt.cuc.ab.ca> deraadt@newt.cuc.ab.ca (Theo de Raadt) writes:
>>Among a large number of other Sunifications I have made to my 386BSD
>>system, I've made this one:
>>
>>lrwxr-xr-x 1 root 8 Oct 24 21:05 bin@ -> /usr/bin
>>
>there are problems with this: notably, straight bsd systems
>aren't "meant" to mount /usr when they're brought up into single user
>mode.
Well, in order to replace /bin with a symlink to /usr/bin, you have to
make some additional changes to the filesystem organization.
First of all, /sbin contains binaries that are necessary when booting
the system or otherwise useful when running in single-user mode.
Things like df, init, mv, rm, clri, mount/umount, mkfs, and so forth
-- a lot of this stuff you're probably accustomed to seeing in /etc.
/bin/sh also moves to /sbin, so you have a shell without needing /bin.
/usr/sbin contains system administration-related binaries that are not
needed when booting the system or when in single-user mode. For
example, the various networking daemons, sar, swap, link, and so
forth. You might be accustomed to seeing this stuff either in
/usr/bin, /etc, or /usr/etc.
/usr/ucb contains BSD-specific binaries, or binaries used in
implementing the BSD-compatibility package (SVR4 only).
/usr/bin now holds all the other binaries.
Note that I only have experience with the SVR4 layout -- Sun's may
differ, although they should be pretty close.
--
Marc Unangst, N8VRH | "There are two ways to solve this problem:
mju@mudos.ann-arbor.mi.us | the hard way, and the easy way. Let's start
| with the hard way."
| - W. Scheider, from a Physics lecture