From: Peter Yardley <peter.martin.yardley@gmail.com>
To: ron minnich <rminnich@gmail.com>
Cc: The Eunuchs Hysterical Society <tuhs@tuhs.org>
Subject: [TUHS] Re: another OSX 100% less Unix
Date: Thu, 27 Jun 2024 21:55:01 +1000 [thread overview]
Message-ID: <55B612BA-0805-4357-8736-8CEED8F3791A@gmail.com> (raw)
In-Reply-To: <CAP6exY+p1AwGOixSBVBYeUmmvRcpq9pgXN5iGJw0t58wYWVm_A@mail.gmail.com>
OSX is Mach which has a BSD emulation layer. And BSD injected into the kernel.
It doesn’t claim to be UNIX.
> On 27 Jun 2024, at 1:29 PM, ron minnich <rminnich@gmail.com> wrote:
>
> I have a directory, t:
> ronsexcllentmbp:t rminnich$ ls -li
> total 0
> 23801442 -rw-r--r-- 1 rminnich wheel 0 Jun 26 20:21 a
> 23801443 -rw-r--r-- 2 rminnich wheel 0 Jun 26 20:21 b
> 23801443 -rw-r--r-- 2 rminnich wheel 0 Jun 26 20:21 c
>
> note that b and c are the same inode.
>
> let's make a cpio.
>
> ronsexcllentmbp:t rminnich$ cpio -o >../t.cpio
> a
> b
> c
> ^D
> 1 block
>
> what's in it?
> ronsexcllentmbp:t rminnich$ cpio -ivt < ../t.cpio
> -rw-r--r-- 1 rminnich wheel 0 Jun 26 20:21 a
> -rw-r--r-- 2 rminnich wheel 0 Jun 26 20:21 b
> -rw-r--r-- 2 rminnich wheel 0 Jun 26 20:21 c link to b
>
> "c link to b"? wtf? Who thought that was a good idea? because ...
> ronsexcllentmbp:t rminnich$ touch 'c link to b'
> ronsexcllentmbp:t rminnich$ ls -l
> total 0
> -rw-r--r-- 1 rminnich wheel 0 Jun 26 20:21 a
> -rw-r--r-- 2 rminnich wheel 0 Jun 26 20:21 b
> -rw-r--r-- 2 rminnich wheel 0 Jun 26 20:21 c
> -rw-r--r-- 1 rminnich wheel 0 Jun 26 20:22 c link to b
>
> and
> ronsexcllentmbp:t rminnich$ cpio -o >../t.cpio
> a
> b
> c
> c link to b
> ^D
>
> ronsexcllentmbp:t rminnich$ cpio -ivt < ../t.cpio
> -rw-r--r-- 1 rminnich wheel 0 Jun 26 20:21 a
> -rw-r--r-- 2 rminnich wheel 0 Jun 26 20:21 b
> -rw-r--r-- 2 rminnich wheel 0 Jun 26 20:21 c link to b
> -rw-r--r-- 1 rminnich wheel 0 Jun 26 20:22 c link to b
>
> so ... it looks like a file is there twice, because somebody thought it was a good idea to confuse a file name and file metadata. And, anyway, it's just as accurate to have it say
> -rw-r--r-- 1 rminnich wheel 0 Jun 26 20:21 a
> -rw-r--r-- 2 rminnich wheel 0 Jun 26 20:21 b link to c
> -rw-r--r-- 2 rminnich wheel 0 Jun 26 20:21 c link to b
> -rw-r--r-- 1 rminnich wheel 0 Jun 26 20:22 c link to b
> Right? :-)
>
> From the same people who brought you this:
> ronsexcllentmbp:t rminnich$ bc
> >>>
>
> Somebody needs to get the osx folks a unix manual set :-)
Peter Yardley
peter.martin.yardley@gmail.com
next prev parent reply other threads:[~2024-06-27 11:55 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-27 3:29 [TUHS] " ron minnich
2024-06-27 3:30 ` [TUHS] " ron minnich
2024-06-27 9:47 ` Leah Neukirchen
2024-06-27 22:22 ` Bakul Shah via TUHS
2024-06-27 11:55 ` Peter Yardley [this message]
2024-06-27 12:06 ` Dan Cross
2024-06-27 13:54 ` Warner Losh
2024-06-27 19:08 ` Stuff Received
2024-06-27 19:44 ` segaloco via TUHS
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