#December 13, 2012 Karen Horan

#!/usr/bin/env bash
#
# EXAMPLES:



#This script will rename files from sun19150809-0356.png to mwil_caiik_fd_19150809_0356.png
#Years of data are 1915 - 1984

#It looks for all files ending in .png.  I'm adding mwil_caiik_fd_ to the beginning of the date,removing the word sun,  
#An underscore _ is added after the minutes and the .png will be left as is.



#If there is no data in a month, it will be ignored.

start_year="${1}"
stop_year="${2}"
for yr in `seq -w ${start_year} ${stop_year}`
do
   for mo in `seq -w 01 12`
   do
      path="${yr}/${mo}"
      if [ -d ${path} ]
      then
         cd ${path}
         for file in *.png
         do
		f2="mwil_caiik_fd_$(echo $file | sed 's/-/_/' | cut -c4-)"
		
           mv $file $f2 

         done
           cd ../..
      else
           echo "${path} does not exist, continuing"
      fi
   done
done