[Info-vax] Hard links on VMS ODS5 disks

[Craig A. Berry]

On 7/14/23 9:58 PM, Dave Froble wrote:
> On 7/14/2023 9:48 PM, Craig A. Berry wrote:
>>
>> On 7/14/23 6:36 PM, Chris Townley wrote:
>>> On 14/07/2023 22:30, gah4 wrote:
>>
>>>> Reminds me of, years ago, porting gnu-utils to OS/2 and finding that
>>>> tail -f works.  I don't know if tail -f is supposed to work on VMS, 
>>>> though.
>>>>
>>>> The main target is embedded Linux, especially where the whole system
>>>> is in flash memory.
>>>
>>> But type/tail does ISTR
>>
>> On most of the interesting cases it fails with invalid file organization.
>>
> 
> Works very well here.  Of course, I don't use invalid file organizations.
> 
> :-)
> 

I don't either, but the job controller does, and log files from batch
jobs are about the only reason I would use this feature. If memory
serves this is a well-known problem and somebody (maybe Hein?) had a fix
in the works that never got prioritized.

$ type/tail somelogfile.log
%TYPE-W-OPENIN, error opening DSA0:[SOMEUSER]somelogfile.log;1 as input
-SYSTEM-E-UNSUPPORTED, unsupported operation or function
-RMS-F-ORG, invalid file organization value
$ dir/full somelogfile.log

Directory DSA0:[SOMEUSER]

somelogfile.log;1             File ID:  (9158,13,0)
Size:          900/912        Owner:    [SOMEGROUP,SOMEUSER]
Created:    15-JUL-2023 08:23:51.37
Modified:   15-JUL-2023 08:23:51.41 (1)
Expires:    <None specified>
Backup:     <No backup recorded>
Effective:  <None specified>
Recording:  <None specified>
Accessed:   15-JUL-2023 08:23:51.37
Attr Mod:   15-JUL-2023 08:23:51.41
Data Mod:   15-JUL-2023 08:23:51.37
Linkcount:  1
File organization:  Sequential
Shelved state:      Online
Caching attribute:  Writethrough
File attributes:    Allocation: 912, Extend: 0, Global buffer count: 0, 
No version limit
Record format:      VFC, 2 byte header, maximum 0 bytes, longest 1024 bytes
Record attributes:  Print file carriage control
RMS attributes:     None
Journaling enabled: None
File protection:    System:RWED, Owner:RWED, Group:RE, World:
Access Cntrl List:  None
Client attributes:  None

Total of 1 file, 900/912 blocks.