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w_vaxlink

FUNCTION
	Script to link names according the 'wfotfits' convention
	to the SDC-SAC convention.

USAGE

	w_vaxlink -obsper number -prefix string [-datdir directory-name]

DESCRIPTION
	When data is read from tape by invoking the 'dd' utility the
	resulting files are of the form 'PREFIX__####.POSTFIX' where
	standard POSTFIX is '.fot' and #### denotes the sequence number
	on the FOT as they also appear in the TAPE DIRECTORY (first file
	FOT.  
	  In order to enable the use of data retrieved by internet from
	SDC-SAC a conversion of the names is needed.  By this convention
	file names are of the form 'FILETYPE_#####_##_@.DAT' where ##### 
	are sequentially incremented numbers and @ is either mode 
	'I', 'N' or 'F'
	 
	  Below a sample (WFC1 only) of the FOT of OP 1234 in the order 
	as they would have appeared on a FOT on tape medium

	tapedirtape_000000_00_0.dat
	ephemeris_000000_00_0.dat
	attitude_000000_00_0.dat
	obt_utc_000000_00_0.dat
	ithkd000_000000_00_0.dat 
	tchkd000_000000_00_0.dat
	w1instdirtape_000000_00_0.dat
	w1obsdirtape_000000_01_i.dat
	w1exconf_01233_01_i.dat		<--- 1233 = number of previous OP
	w1hkd000_01233_01_i.dat
	w1eng000_01233_01_i.dat
	w1dir001_01233_01_i.dat
	w1obsdirtape_000000_01_n.dat
	w1exconf_01234_01_n.dat		<--- 1234 = number of this OP
	w1hkd000_01234_01_n.dat
	w1eng000_01234_01_n.dat
	w1dir001_01234_01_n.dat
	w1obsdirtape_000000_02_n.dat
	w1exconf_01234_02_n.dat
	w1hkd000_01234_02_n.dat
	w1eng000_01234_02_n.dat
	w1dir001_01234_02_n.dat
	w1obsdirtape_000000_01_f.dat
	w1exconf_01235_01_f.dat		<--- 1235 = number of following OP
	w1hkd000_01235_01_f.dat
	w1eng000_01235_01_f.dat
	w1dir001_01235_01_f.dat

		
OPTION SPECIFIERS
 
-obsper  [integer]
	Specifies the Observation Period of the Fot data
	If omitted the user is prompted to enter it 
	
-prefix  [string]
	Specifies the string prefixed to the resulting linknames
	If omitted the user is prompted to enter it.  If entered 
	a '^' it will become the OP number prefeixed by 'OP'
	
-datdir  [string]
	Specifies the directory weher the  Fot datais located.
	If omitted the current directory is taken as default.
	
-ext  [string]
	Specifies the extension of the linknames.
	Default '.fot' [NOT NORMALLY CHANGED]
-test
	Only echo the link commands but do not perform
	

EXAMPLE:

Make linkfiles in current directory pointing to files in the data 
directory /FOTDIR of Obspervation Period 999

  >  w_vaxlink -obsper 999 -prefix OP999 -datdir /FOTDIR


NOTES

  - By default the links are made in the current directory
  
  - the tape filenames must be either upper- or lowercase, but not mixed.
  
  - names of the DAT files are renamed with removed revision extensions ';*'

  - The Observation Period ID must be numeric and pertain to the
    Normal observing period (so NOT of Initial/Final Obs. Per.)
	  
  - For reference see Document TPZ/GO.SDC-100/FOT-TN/SAX chapt 2.3 + 2.4
  

SEE ALSO
	w_proc, w_stageI



Mark Savenije
Sat Jan 18 15:04:49 MET 1997