Shell Programming and Scripting

I'd really appreciate if anyone could assist me with this code

A directory with multiple subdirectories has multiple files which are timestamp'ed.

We need to
- compress files as per timestamp
- save compressed file/s in the respective folder
- delete the source files

============
Current output
===========
Example : -
john (directory)
=============
1.xml oct 21 2010
2.xml oct 22 2010
3.xml oct 22 2010
4.xml oct 24 2010

sam (sub -directory)
===============
41.xml oct 22 2010
45.xml oct 21 2010
23.xml oct 23 2010
14.xml oct 24 2010
11.xml oct 24 2010

test (sub -directory)
================
91.xml oct 23 2010
14.xml oct 25 2010
15.xml oct 24 2010
18.xml oct 25 2010

===============
Required output
===============
john(directory)
===============
oct 21 2010.gz #(one file)
oct 22 2010.gz #(two file)
oct 24 2010.gz #(one file)

sam (sub -directory)
======================
oct 22 2010.gz #(one file)
oct 21 2010.gz #(one file)
oct 23 2010.gz #(one file)
oct 24 2010.gz #(two file)

test (sub -directory)
=====================
oct 23 2010.gz #(one file)
oct 25 2010.gz #(two file)
oct 24 2010.gz #(one file)

I managed
find ${MAIN_DIR} -mtime +7 -exec gzip -1 {} \;

Correct me if it needs any changes and Thanks in Advance.

this command will look for file whose modification time is older than 7 days and zip them as filename.gz and not with the timestamp.

Also tell me does ur filename has space inbetween or any other characters ?

Thanks abinaya.

Yes, you are correct this code is zipping files which are older than 7 days individual but i need to compress all files which are pertain to one day in to one file as their respective directories.

And we have different types of file names and some of them i given below.

john_0_20100905_000028.xml
sam01013735.xml
test_2010092417071107.XML

kindly let me know if you need any further information.