逃离与正斜杠和问号开始一个批处理文件回声 [英] Escaping a batch file echo that starts with a forward slash and question mark

问题描述

一个棘手的一个位。我怎样才能正确地逃脱在批处理文件下面？

Bit of a tricky one. How can I correctly escape the following in a batch file?

echo    /?   display this help text

这特殊的字符组合被视为一个ECHO /？命令：

This particular combination of characters is treated as an "ECHO /?" command:

C:\Batch>ECHO       /?    display this help text
Displays messages, or turns command-echoing on or off.

  ECHO [ON | OFF]
  ECHO [message]

Type ECHO without parameters to display the current echo setting.

这不响应符号（^）逃逸，即我试过^ /？ / ^？和^ / ^？

It does not respond to caret (^) escaping, ie. I've tried ^/? /^? and ^/^?.

注意：作为解决办法，我发现，足以绕过ECHO命令行处理器之间插入其他字符如：

NB: As a workaround, I found that inserting other characters in between is enough to bypass the ECHO command line processor, eg:

echo ...   /?   display this help text

不过，这是不理想的，我想知道是否有到acheive所需的输出，即用/办法？在回应消息的开始。

Still, this is not ideal and I wondered if there was a way to acheive the desired output, namely with /? at the start of the echoed message.

推荐答案

有关逃脱回声参数，则可以使用替代语法回声：

For escaping echo arguments, you can use the alternative syntax echo.:

echo./?

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