dir>nul 2>nul
Here, 2 refers to redirecting the standard error output to nul. I know, heh heh
Here, 2 refers to redirecting the standard error output to nul. I know, heh heh
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中国DOS联盟论坛 » DOS批处理 & 脚本技术（批处理室） » What does "ping -n 1 127.1 > nul" mean?
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Floor 31
Posted 2007-02-17 00:20 · 中国 浙江 台州 温岭市 电信
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Floor 32
Posted 2007-03-05 00:39 · 中国 吉林 长春 电信
Floor 33
Posted 2007-03-05 05:52 · 中国 广东 珠海 电信
Very careful, learned. Thank you!!!!!!!!!!!!
Floor 34
Posted 2007-03-05 07:23 · 中国 北京 顺义区 联通
I've always been unable to understand, but finally got it. Thanks to the people before floor 33, especially lxmlxm!
Floor 35
Posted 2007-03-07 02:07 · 中国 广西 柳州 电信
It can be understood as >NUL shields the correct return information
2>NUL shields the information of wrong return
2>NUL shields the information of wrong return
Floor 36
Posted 2007-03-07 04:37 · 中国 广东 广州 联通
Learn another trick, thanks
Floor 37
Posted 2007-03-17 06:06 · 中国 山东 威海 教育网
Well written! Bits and pieces of learning...
Floor 38
Posted 2007-03-17 21:05 · 中国 上海 黄浦区 电信
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Floor 39
Posted 2007-03-18 01:09 · 中国 湖北 荆门 电信
Oh!
Suddenly see the light! ! ! !
Suddenly see the light! ! ! !
Floor 40
Posted 2007-03-18 01:11 · 中国 湖北 荆门 电信
If there are still any questions, take a look at this batch processing @echo off&mode con cols=80 lines=13&title,【%~n0】&setlocal,EnableDelayedExpansion&color 02
set a=To***:
set b=Distance doesn't mean separation, no contact doesn't mean forgetting, no phone calls don't mean neglect. Happy birthday to you, Merry Christmas, Happy New Year, always happy...
set c= ------ by ***
set d= 2007-3-16
echo/&echo\
for %%i in (a b c d) do (
set/p= <nul
for /l %%a in (0,1,100) do (
if not "!%%i:~%%a,1!"=="" (
if %%a==24 echo.&echo;
set/p= !%%i:~%%a,1!<nul
ping 127.1 -n 1 >nul
)
)
echo;&echo;
)
for /l %%i in (0x1,0x1,0x9) do (
set /a b=%%i ">>" 1
::call :modify %%i
set a=%%i
color !a!!b!
ping 127.1 -n 2 >nul)
ping 127.1 -n 3 >nul
goto :print
:end
echo.&echo.
ping 127.0.0.1 -n 7 >nul 2>nul
goto :eof
:print
cls&color 04&echo\&echo\&echo\&for /f "delims=" %%a in ('more +38 %0') do echo %%a
mshta vbscript:CreateObject("SAPI.SpVoice").Speak("Happy birthday to you!")(Window.close)
goto :end
iiiiiiiiiiiiiiiiiii Wish ***:
|||||||||||||||||||||||
__|______H_a_p_p_y______|__ Happy birthday
|\/\/\/\/\/\/\/\/\\/\/\/\/\/|
|||||| B i r t h d a y |||||| Happy every day...
|,,,,,,,,,,,,,,,,,,,,,,,,,,,|
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ More and more beautiful...
--------------------------------------------------------------------------------
set a=To***:
set b=Distance doesn't mean separation, no contact doesn't mean forgetting, no phone calls don't mean neglect. Happy birthday to you, Merry Christmas, Happy New Year, always happy...
set c= ------ by ***
set d= 2007-3-16
echo/&echo\
for %%i in (a b c d) do (
set/p= <nul
for /l %%a in (0,1,100) do (
if not "!%%i:~%%a,1!"=="" (
if %%a==24 echo.&echo;
set/p= !%%i:~%%a,1!<nul
ping 127.1 -n 1 >nul
)
)
echo;&echo;
)
for /l %%i in (0x1,0x1,0x9) do (
set /a b=%%i ">>" 1
::call :modify %%i
set a=%%i
color !a!!b!
ping 127.1 -n 2 >nul)
ping 127.1 -n 3 >nul
goto :print
:end
echo.&echo.
ping 127.0.0.1 -n 7 >nul 2>nul
goto :eof
cls&color 04&echo\&echo\&echo\&for /f "delims=" %%a in ('more +38 %0') do echo %%a
mshta vbscript:CreateObject("SAPI.SpVoice").Speak("Happy birthday to you!")(Window.close)
goto :end
iiiiiiiiiiiiiiiiiii Wish ***:
|||||||||||||||||||||||
__|______H_a_p_p_y______|__ Happy birthday
|\/\/\/\/\/\/\/\/\\/\/\/\/\/|
|||||| B i r t h d a y |||||| Happy every day...
|,,,,,,,,,,,,,,,,,,,,,,,,,,,|
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ More and more beautiful...
--------------------------------------------------------------------------------
Floor 41
Posted 2007-03-22 06:09 · 中国 广东 广州 电信
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mshta vbscript:CreateObject("SAPI.SpVoice").Speak("Happy birthday to you!")(Window.close)
This sentence can make the batch processing sound, wonderful!
This sentence can make the batch processing sound, wonderful!
Floor 42
Posted 2007-03-26 09:22 · 沙特阿拉伯
Learned something again today, not in vain. Hehe!
Floor 43
Posted 2007-04-02 05:28 · 中国 山东 潍坊 电信
Originally posted by axi at 2007-3-21 05:09 PM:
mshta vbscript:CreateObject("SAPI.SpVoice").Speak("Happy birthday to you!")(Window.close)
This sentence can make the batch processing sound, wonderful!
The speech rate is too fast, and the pronunciation is not quite right. It cannot pronounce pinyin,
Can the above deficiencies be solved?
Hope the expert can tell!
Floor 44
Posted 2007-04-20 08:55 · 中国 广东 中山 电信
Learned something! Thanks to the expert!
Floor 45
Posted 2007-04-20 09:01 · 中国 陕西 西安 电信
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