[Info-vax] Programming languages on VMS

[Jan-Erik Soderholm]

Den 2018-02-09 kl. 20:30, skrev Arne Vajhøj:
> On 2/9/2018 10:59 AM, Jan-Erik Soderholm wrote:
>> Just for fun I wrote a short DCL file that checks the number of
>> days between the ;0 and the ;-0 of each file on our dev system.
>> Now, I notice from the HELP that F$delta_time only supports a
>> 4-digit return value for the DDDD field, right? It still works,
>> but it will break in about a year with some files...
>>
>>
>> dev:[xx.yyy]aaaaaa.OPT;6      12-DEC-2012 12:39:00.94
>> dev:[xx.yyy]aaaaaa.OPT;2       6-MAR-1986 09:11:42.00
>>
>> Or a more recently change file:
>>
>> dev:[xx.yyy]bbbbbb.COB;9       2-NOV-2017 10:08:56.19
>> dev:[xx.yyy]bbbbbb.COB;7      24-SEP-1991 11:16:27.00
>>
>> OK, it is not that common that we actually need to look into
>> one of the files from the 80's or the 90's, but anyway...
> 
> Have you removed PURGE from DCLTABLES on that system_
> 
> If not then I think it is a very riusky setup.
> 
> And I also believe this a good example of where file version
> numbers should not be used and source control should be used.
> 
> Arne
> 

No, *that* (that we have some old versions) are not particular risky
as such. They just are there. And as I wrote, it is not that common
that we need to look in files that are 10+ years old. It would not a
catastrophe if they would be gone either..

And anyway, *if* they are purged, we have 60 days to discover that
and restore them from backup, if we need to.

And no, PURGE has not been removed from DCLTABLES.