finding duplicate files by size and finding pattern matching and its count

Shell Programming and Scripting
1

Hi,

I have a challenging task,in which i have to find the duplicate files by its name and size,then i need to take anyone of the file.Then i need to open the file and find for more than one pattern and count of that pattern.

Note:These are the samples of two files,but i can have more duplicate and original pairs.

Input:
------
File_1 and File_2

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
???????????????????????????????????
Name=Jerome
City=chicago
Name/city:Jerome-Chicago
Address#???????????????????
Place:/Chicago
counry::/US

Name=John
City=Detroit
Name/city:John-Detroit
Address#???????????????????
Place:/Detroit
counry::/US

Name=Josephine
City=Chicago
Name/city:Josephine-Chicago
Address#???????????????????
counry::/US

Check1:
------------
-rwxrwxrwx 1 tstibill tstibill 374 Dec 1 13:03 File1
-rwxrwxrwx 1 tstibill tstibill 374 Dec 1 13:02 File2

374 bytes

Check 2:
-----------
take anyone file suppose File_1 and find the pattern and count for
Name/city:
Address#
Place:/
counry::confused:

Output
----------
pattern,count,filename
Name/city:,3,File_1
Address#,3,File_1
Place:/,2,File_1
counry::/,3,File_1

I hope,I didnt confuse anyone

2

Hi All,
sorry for rephrasing.
while finding duplicates I will use file naming convention(substring of files 1,4) and file size too.

3

This will help:
man find (-name -size)
man grep (-c)
man diff
Regards.