Helwig,

$ cd /usr/src
$ ls -al
total 2
drwxrwxr-x 2 bin 224 Sep 25 1980 .
drwxr-xr-x 17 root 304 Feb 15 19:30 ..
$

These are the disks I am using

Interdata Unix V7

iu7_dp0.dsk 10MB disk image containing / and /usr
iu7_dp1.dsk 10MB disk for swap and /tmp

Both dated 23 Feb, 2003.

If there is a better set let me know. I could not get Unix V7

to run under PDP-11 so I am using Interdata-32.

Thanks

On Thu, Feb 16, 2023 at 10:06 AM Hellwig Geisse <hellwig.geisse@mni.thm.de> wrote:

On Do, 2023-02-16 at 09:24 -0500, KenUnix wrote:
>
> * - I'm not sure where they hid errno if there was one. I'd think
> * there had to be. Maybe Kernighan or Pike knows...

It's a .comm variable, as you can see, e.g., in
/usr/src/libc/crt/cerror.s in Keith Bostic's V7.

Hellwig