Under pure DOS, when calling an executable that needs a keypress confirmation. If I press Y according to the prompt, it can execute normally to the end. But when using the pipe command echo Y|a.exe, the program hangs when it reaches the prompt line, and there is no response no matter what I press on the keyboard, but the indicator lights are all normal. Also, this command works correctly with other executable programs. What is causing this?
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中国DOS联盟论坛 » DOS批处理 & 脚本技术（批处理室） » [Help] Question about the pipe '|'
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Original Poster
Posted 2009-02-28 04:50 · 中国 福建 厦门 电信
Floor 2
Posted 2009-02-28 10:17 · 中国 广东 东莞 电信
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I think a.exe is not receiving standard input
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Floor 3
Posted 2009-03-02 00:02 · 中国 辽宁 大连 旅顺口区 联通
If you want a program to support pipes, the program itself needs to create the pipe and connect to the pipe; this has to be implemented when writing the program. In other words, whether a program can use pipes is determined by the program itself...
Floor 4
Posted 2009-03-02 03:44 · 中国 福建 厦门 电信
Thanks!
It should be standard input, right? Following the prompt, if I type Y directly, it can continue running, and with another tool that comes with it, I can do it using the pipe command
It should be standard input, right? Following the prompt, if I type Y directly, it can continue running, and with another tool that comes with it, I can do it using the pipe command
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