Help write a linux shell script . About the SIM number section of

I've got this one demand segment on SIM card , but I are not familiar with linux script , so here please heroes help ! Requirements are as follows :
linux in the path / export/SIM1 / , there may be several folders 135,138,139 and so on. In 135 there may be 1111,2222 ( four of ) equal segments need to determine what number section ! ! ! ! ! in 138,139 will also true. For example, section 1111 exists under 135 , it is determined whether the number under paragraph No. There are other segments such as 3333 ( also four ) . such as the presence paragraph No. 3333 , it is determined whether there is day 3333 generated files , such as 2013-08-21.sh. If there is then copied to the / export/SIM2 / appropriate folder. But / export/SIM2 / path is empty , the need to / export/SIM1 / determine if there is a corresponding folder is not created , if there is no need to create . . To the more urgent , please help heroes ! ! ! Brother thanks thanks ~ ~ ~

------ Solution -------------------------------- ------------

 #!/bin/bash
 
 DIR1=/export/SIM1
 DIR2=/export/SIM2
 
 for i in ${DIR1}/*
 do
 	if [ -d $i ]
 	then
 		for j in $i/*
 		do
 			if [ -d $j ]
 			then
 				echo $j
 				echo $j/`date +%Y-%m-%d`.sh
 				if [ -f $j/`date +%Y-%m-%d`.sh ]
 				then
 					echo $j/`date +%Y-%m-%d`.sh
 					tmp=${j/SIM1/SIM2}
 					mkdir -p ${tmp}
 					cp $j/`date +%Y-%m-%d`.sh ${tmp}
 				fi
 			fi
 		done
 	fi
 done
 

if you can use
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If the echo values ​​are in line with expectations , then , echo can be deleted
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gray often thank you , I used your script as a foundation , modify has become what I want. Thanks ~ ! !