Problems creating a directory in /usr

[Jean-David Beyer]

On 02/08/2013 08:35 AM, Clive Hills wrote:
> I know what modern unix does. This thing originated many years ago.
> I doubt raising a bug will help but I shall do so as it may affect other
> users.
> 
> I also go back to the olde days of Unix and teletypes.

I remember those old days.

I needed an RDBMS and there were none on UNIX at the time, so I wrote
one. Not the way they are done today. I used a very interesting indexing
scheme whereby you could do partial-match retrieval.

With a telephone directory database, I could look for

Smith on Smith in Smith

and find everyone named smith (first, middle, or last name) on Smith St,
Rd, Av, etc, in Smithville, Smithtown, etc. And do this without making a
sequential search on all the records in the database.
> 
> This database also known as Pick or Reality was a standalone OS/DBMS in
> those days.
> 
> Clive
> 


Ah! The good old days. I do not miss them for a minute. I even knew the
complete set of op-codes for the IBM 704, 709, 7094, ... and for the CCC
DDP-224. I never learned the ones for the CDC machines or the IBM/360
series though, and I forgot the ones for the GE 635/645.