I have input text file with single line having thousands of records one after another. I want to split    
them after length of 10 characters each.

**Input Record** - 
====================== Begin of data =========================
 abcdefghijklmnopqrstuvwxyz1234567890       <= Input file having all records on single line
====================== End of data   =========================

**Expected output** -
====================== Begin of data =========================
 abcdefghij            <= each line of 10 characters
 klmnopqrst
 uvwxyz1234
 567890
====================== End of data   =========================

Please help me to do this using batch script.

** Try using Notepad++**
It worked well using Notepad++ with below regular expressions –

Find => (?-s).{10}
Replace => ${0}\r\n