China DOS Union

Variable Delay and Command Expansion

@echo off

::Display source code

more %0&pause

for /l %%a in (1 1 4) do set t=%time% & echo %random% /%t%/

echo -----------&pause>nul

setlocal enabledelayedexpansion

for /l %%a in (1 1 4) do set t=%time% & echo !random! /!t!/

endlocal

echo -----------&pause>nul

for /l %%a in (1 1 4) do set t2=%time% & call echo %%random%% /%t2%/ \%%t2%%\

echo -----------&pause>nul

Press any key to continue. . .
23520 //
23520 //
23520 //
23520 //
-----------
25655 / 3:22:09.42 /
23230 / 3:22:09.42 /
29496 / 3:22:09.42 /
30091 / 3:22:09.42 /
-----------
2940 // \ 3:22:16.28 \
12893 // \ 3:22:16.28 \
1357 // \ 3:22:16.28 \
28853 // \ 3:22:16.28 \
-----------

set n=1

set/a n+=1&call echo %%n%%&pause

2
Press any key to continue......

[ Last edited by plp626 on 2008-4-16 at 11:30 AM ]

Haha, inspired by plp626, I modified it into a bilingual HTML version.

@echo off

::wangwei-20080205-xg Bilingual CMD Command Quick Reference Manual
setlocal EnableDelayedExpansion
@echo Please wait, creating CMD command directory...
>CMD Command Quick Reference Manual.htm echo ^<center^>^<h1^>CMD Command Quick Reference Manual^</h1^>%username% in %date% %time%^</center^>^<br^>
>>CMD Command Quick Reference Manual.htm echo ^<table^>
for /f "delims=:" %%f in ('help^|findstr /n "^ASSOC"') do set head=%%f
set /a head-=1
if "%head%"=="0" (set head=) else set head=skip=%head%
for /f "%head% delims=" %%i in ('help') do (
set str=%%i & set name=!str:~0,9! & set desc=!str:~9!
echo.!name! | findstr /v "^[A-Z]" >nul && echo !desc! >>CMD Command Quick Reference Manual.htm
if errorlevel 1 echo ^</td^>^</tr^>^<tr^>^<td^>^<a href="#!name!"^>!name!^</a^>^</td^>^<td^>^ ^ ^ !desc!>>CMD Command Quick Reference Manual.htm
)
cls
>>CMD Command Quick Reference Manual.htm echo ^</td^>^</tr^>^</table^>^<br^>^<a href="#top"^>Back to Top^</a^>^<br^>
for /f %%i in ('help') do (
echo * * * * * * *>>CMD Command Quick Reference Manual.htm
echo.>>CMD Command Quick Reference Manual.htm
>>CMD Command Quick Reference Manual.htm echo ^<a name="%%i"^>^<h2^>%%i^</h2^>^<pre^>
cls
graftabl 936>nul
@echo Creating help for %%i command...
help %%i>>CMD Command Quick Reference Manual.htm
echo ────────────────────────>>CMD Command Quick Reference Manual.htm
echo English Translation:>>CMD Command Quick Reference Manual.htm
cls
chcp 437>nul
help %%i>>CMD Command Quick Reference Manual.htm
echo.>>CMD Command Quick Reference Manual.htm
>>CMD Command Quick Reference Manual.htm echo ^</td^>^</tr^>^</table^>^<br^>^<a href="#top"^>Back to Top^</a^>^<br^>
)
graftabl 936>nul
start CMD Command Quick Reference Manual.htm

I think we can make a cmd & bat tutorial & DOS learning software selected collection. Actually, many tutorials are well-written, but they are too scattered. Many people can't find them. (This message can be deleted) I collected some good ones...http://523066680.ys168.com/

Please look forward to it................................

Learning spirit... When we can explain some content of DOS, we can be considered to have learned that part of the content! Let's work together...

Thanks for your sharing, I can't understand it very well, learning...

Although many people are confused, I am still very grateful! But I would like to make a suggestion. Since it is your own bit-by-bit study, can you explain it more simply and make the examples more clear?

Thanks to the LZ for writing some basic things. Thanks to 523066680 for the treasures in the U disk. I'll go download them and study them.

It's great. There are still many things in DOS that I haven't made good use of.
It's wonderful. The world of DOS is too big.
Love this forum to death.

This post is suitable for those who haven't mastered it yet to learn!

Thanks for sharing

This forum is really great, thanks to plp626.

I still have some links here, not pasted.