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Things to Know [cont'd]
File content to variable in Things to Know of MS-DOS Commands
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How to load file content to a variable in MS DOS batch files? 
< less than arrow is used to assign the value from a file to variable in ms dos.
Example
@echo off

SET /P file_contents=<data.txt
echo %file_contents%
Data.txt 
MS DOS - Microsoft Disk Operating System
Output 
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