Merge file using Command Prompt

This is quite simple way to merge file without using another "need to be downloaded" software. Using software which already exists in your Operating System (Windows), Command Prompt.
I'd like to show how do I merge my picture(.jpg .png .jpeg etc) with winrar(.rar)

1.  Let say, the file that you want  to merge is in "Local disk C:\FILE MERGED" as shown below

2. Here my .png and .rar in "FILE MERGED" folder.

3. Open your Command Prompt

4. In your Command Prompt, use "cd" command to open new directory(called path, maybe) to the FILE MERGED folder(which contain the file that you want to merge). First, go to C:\ directory where your FILE MERGED folder located.

5. Cd to FILE MERGED folder.

6. Use "copy /b" command to start combine the files. Make sure you put the extension as well.

copy /b a.png + b.rar ok-go.rar

7. If succeed, it will display; "1 file<s> copied" as shown below.

8. Here your new file, appear as the winrar file, but it is actually an image.

9. If you can't open it with your image viewer(picasa, windows image viewer etc) you can still open it with your web browser(google chrome, mozilla firefox, internet explorer, opera etc)

This is also a simple way to keep your file secured(hidden from someone you do not know indeed)
You could use the command to merge another file, like video etc.

Understand more the "copy /b" command here