China DOS Union

In a batch file, I want to create a test.bat under D:\, with the content: set aaa=bbb

So:
................
echo set aaa= >d:\test.bat
echo bbb >>d:\test.bat

But after executing the above statements, the content of d:\test.bat turns out to be:
set aaa=
bbb
instead of:
set aaa=bbb

How can I make the strings output by the above two command lines go to the same line in d:\test.bat?

Actually, you already know how to do it yourself....
Wouldn't echo set aaa=bbb>d:\test.bat do it

The above example was just an analogy!
What I want to know is: how can I make the content output twice with the ECHO command be printed onto the same line in test.bat!

That kind of idea won't work, ECHO absolutely outputs with a line break!

The ECHO command under DOS is too weak, not satisfying at all

The following is quoted from LanE's post at 2003-8-2 10:54:28:
The ECHO command under DOS is too weak, not satisfying at all

Then GNUish DOS commands (such as PRINTF, etc.) are also pretty good..

Re hzy:

There are three ways of thinking about making them output on the same line:

1. Find a way not to output the carriage return:
echo definitely won't work for this. You can try the GNUish commands the moderator mentioned; I personally use oecho.exe. If you can't find any of those, just write one yourself directly in C or assembly, it's simple anyway. Also, debug can write it too. If none of those methods suit your taste, then you can try the following idea.

2. Just use echo to output, then find a way to delete the carriage return:
This is rather tricky. So far I've only seen using debug to reduce the file length by two bytes and then save it again, but this requires knowing the length of the source file in advance, so its use is somewhat limited. In addition, some editing software that supports pipe operations (such as edlin under dos5) or binary string replacement software (such as hexc in the undisk package) can also do this.
echo r cx >delfeed.scr
echo source file length minus 2, then convert it to hexadecimal >> delfeed.scr
echo n sample2.tx>>delfeed.scr
echo s >> delfeed.scr
debug sample1.txt < delfeed.scr

hexc sample1.txt sample2.txt 0d0a ""

3. Directly prepare the needed file in advance instead of outputting it temporarily. This method is suitable when the content of sample1.txt is fixed; using an editor to pre-edit the required header file without a carriage return is not very difficult.

The following is quoted from willsort's post at 2003-9-29 3:20:20:
Re&nbsp;hzy:

&nbsp;&nbsp;&nbsp;&nbsp;There are three ways of thinking about making them output on the same line:

&nbsp;&nbsp;&nbsp;&nbsp;1. Find a way not to output the carriage return:
&nbsp;&nbsp;&nbsp;&nbsp;echo definitely won't work for this. You can try the GNUish commands the moderator mentioned; I personally use oecho.exe. If you can't find any of those, just write one yourself directly in C or assembly, it's simple anyway. Also, debug can write it too. If none of those methods suit your taste, then you can try the following idea.

&nbsp;&nbsp;&nbsp;&nbsp;2. Just use echo to output, then find a way to delete the carriage return:
&nbsp;&nbsp;&nbsp;&nbsp;This is rather tricky. So far I've only seen using debug to reduce the file length by two bytes and then save it again, but this requires knowing the length of the source file in advance, so its use is somewhat limited. In addition, some editing software that supports pipe operations (such as edlin under dos5) or binary string replacement software (such as hexc in the undisk package) can also do this.
&nbsp;&nbsp;&nbsp;echo&nbsp;r&nbsp;cx&nbsp;>delfeed.scr
&nbsp;&nbsp;&nbsp;echo&nbsp;source file length minus 2, then convert it to hexadecimal&nbsp;>>&nbsp;delfeed.scr
&nbsp;&nbsp;&nbsp;echo&nbsp;n&nbsp;sample2.tx>>delfeed.scr
&nbsp;&nbsp;&nbsp;echo&nbsp;s&nbsp;>>&nbsp;delfeed.scr
&nbsp;&nbsp;&nbsp;debug&nbsp;sample1.txt&nbsp;<&nbsp;delfeed.scr

&nbsp;&nbsp;&nbsp;hexc&nbsp;sample1.txt&nbsp;sample2.txt&nbsp;0d0a&nbsp;&quot;&quot;

&nbsp;&nbsp;&nbsp;&nbsp;3. Directly prepare the needed file in advance instead of outputting it temporarily. This method is suitable when the content of sample1.txt is fixed; using an editor to pre-edit the required header file without a carriage return is not very difficult.

Still can't understand it