[daip] Queries on aips opening files

[Eric Greisen]

On 06/09/2017 06:32 AM, 张迎康 wrote:
> Dear NRAO staff,
>
> These days I cannot open files in FITLD or IMLOD, it always said that:
>
> ERROR  3 ON UNIT TTDEV03         , GETTING HOST/SERVICE BY NAME
>  ZMSGOP: ZTTOPN RETURNS ERROR =   1 FOR LUN =   6
> IMLOD1: Reading from disk file: PWD:1445+0958_new.fits
> IMLOD1: ZTPOPN: DISK DEVICE = PWD:1445+0958_new.fits NOT FOUND
> IMLOD1: TAPIO: ERROR   2 OPENING FILE
> IMLOD1: MLTAPE: COULD NOT OPEN TAPE.  IER=      8
> IMLOD1: Purports to die of UNNATURAL causes
> IMLOD1: localhost    31DEC16 TST: Cpu=       0.0  Real=       0
>
> or
>
> FITLD1: Task FITLD  (release of 31DEC16) begins
> FITLD1: ZTPOPN: DISK DEVICE = PWD:BZ64A.idifits1 NOT FOUND
> FITLD1: TAPIO: ERROR   2 OPENING FILE
> FITLD1: ALSO COULD NOT OPEN PWD:BZ64A.idifits
> FITLD1: ERROR!       8 OPENING TAPE
> FITLD1: Purports to die of UNNATURAL causes
> FITLD1: localhost    31DEC16 TST: Cpu=       0.0  Real=       0
>
>
>
> I'm pretty sure that I typed the right name and under the right
> document. Since I can run it well before using 31DEC15, I think the
> problem came out after I install a new version of AIPS (31DEC16). Now
> the 2 versions both exist in my laptop, they share the same ROOD
> directory: /home/xxx/aips/
>
> Could you please tell me how to solve the problem?

DATAIN requires a logical (environment) variable that is assigned before 
you start AIPS followed by a colon (:) and then the actual file name. 
Assuming that 1445+0958_new.fits is correct, the problem must lie with 
the environment variable which, in the above, has the odd name of PWD. 
Exit AIPS and type
echo $PWD
and see if it says anything and if so does it say the actual directory 
(folder) containing the data files.

ERic Greisen