====================================================================================
 Find raw and rinex data using the paths that are set in tables/process.defaults 
 
 Usage: sh_find_data <options> 
  
 Where the following command-line arguments are required: 
  
 -d yr day            where yr and day are to processed e.g. 1997 153 
 -type all/raw/rinex  sets type of data to find 
 -expt expt           4 char experiment ID (used to get correct list from sites.defaults)
  
 Notes:  1) procdir must be set as an environment variable before call script
         2) rnxfnd and/or rawfnd in process.defaults constain the paths of the directories to be searched
         3) localrx with the expt name must be set in sites.defaults
  
====================================================================================