Now, I am back to learn dos command again, in order to satisfy the project requirement :)
1. Merge files using Dos command
If there are 2 files (1.txt and 2.txt) in c:\Test folder, and I want merge them to another file(3. txt) in C:\Test folder
>> c
>>cd C:\Test
>>copy 1.txt+2.txt 3.txt
Remarks: there should be new line at the end of 1.txt
