[RESOLVED] How Does D.O.S. do this?

:rolleyes: FIGURED IT OUT.

Thanks everyone.:)

Whats with all the hex numbers?

Why not just delete the duplicate post? Just go into Edit mode, then put a checkmark in "Delete?" and click the "Delete Now" button.

Fun and easy.


It looks like the hex numbers are for a .COM executable, so that the file can call on itself and create the .COM (hence all the echoes to the ~.txt and all that.

Guess I am just used to not being able to delete posts.

AlaridD is correct. The 25 lines that begin with:

• echo nwait.com>~.txt

and end with:

• echo q>>~.txt

are creating a temporary debug script file named:

• ~.txt

This "~.txt" file is then fed to the DOS debug program with the command:

• debug<~.txt>nul

We now have a little 306-byte program named "wait.com" in our current directory. Wait.com is then launched with the command:

• wait 5

which simply pauses the BATch file for 5 seconds. Wait.com is then deleted with the command:

• del wait.com

In other words, the needed wait.com program is simply embedded within the .BAT file.