将stdout重定向到管道'挂起' [英] Redirect of stdout to pipe 'hangs'

问题描述

Iam从事客户端，使用C ++在Linux上进行服务器编程。

我在后台运行服务器守护程序，我的客户端程序

与服务器进行通信并提取我在屏幕上打印的一些数据。这个东西工作正常但是当我重新定向

stdout到管道时它会挂起来永恒，


例如，


seema @ coma> simple_client |更多


如果我'杀死''服务器守护进程，那么控制最终会返回给shell的
。我需要让它工作，因为

我想将可执行文件与shell脚本集成。请问某人

请解释一下如何修理它？


预先谢谢

Seema

Iam working on Client, Server programming on Linux in C++.
I have a Server Daemon running in the background, my client program
talks to the Server and extracts some data which I
am printing on the screen. This thing works fine but when i redirect
the stdout to pipe it hangs for eternity,

for example,

seema@coma> simple_client | more

If I ''kill'' the Server Daemon, then control is eventually returned back
to the shell. I need to make it work because
i want to integrate executable with the shell script. Can somebody
please explain how to fix it?

Thanks in Advance
Seema

推荐答案

se ******** @ yahoo.co.in 写道：

我在客户端上工作，用C ++编写Linux上的服务器编程。
我在后台运行服务器守护程序，我的客户端程序
与服务器对话并提取我正在屏幕上打印的一些数据。这个东西工作正常但是当我将stdout重定向到管道时它会挂起来永恒，

例如，

seema @ coma> simple_client |更多

如果我'杀死''服务器守护进程，那么控制最终会返回给shell。我需要让它工作，因为我想将可执行文件与shell脚本集成。有人可以解释一下如何解决它吗？

提前致谢
Seema

Iam working on Client, Server programming on Linux in C++.
I have a Server Daemon running in the background, my client program
talks to the Server and extracts some data which I
am printing on the screen. This thing works fine but when i redirect
the stdout to pipe it hangs for eternity,

for example,

seema@coma> simple_client | more

If I ''kill'' the Server Daemon, then control is eventually returned back
to the shell. I need to make it work because
i want to integrate executable with the shell script. Can somebody
please explain how to fix it?

Thanks in Advance
Seema

请发布您的代码你希望我们帮助你。


另外，请不要过帖。如果您有c ++语言问题，请在此处发布

。如果它有问题，请在该新闻组中询问。


发布到此新闻组的规则可在
http://www.faqs.org/faqs/by-newsgrou....lang .c ++。html


- John Ratliff

Please post your code if you want us to help you with it.

Also, please don''t cross post. If you have a c++ language question, post
it here. If it''s a c question, ask it in that newsgroup.

Rules for posting to this newsgroup are available at
http://www.faqs.org/faqs/by-newsgrou....lang.c++.html

--John Ratliff

se ******** @ yahoo.co.in 写道：

我正在研究客户端，服务器编程Linux中的C ++。
我有一个服务器后台程序在后台运行，我的客户端程序与服务器对话并提取一些我在屏幕上打印的数据。这个东西工作正常但是当我将stdout重定向到管道时它会挂起来永恒，

例如，

seema @ coma> simple_client |更多

如果我'杀死''服务器守护进程，那么控制最终会返回给shell。我需要让它工作，因为我想将可执行文件与shell脚本集成。有人可以解释一下如何解决它吗？

Iam working on Client, Server programming on Linux in C++.
I have a Server Daemon running in the background, my client program
talks to the Server and extracts some data which I
am printing on the screen. This thing works fine but when i redirect
the stdout to pipe it hangs for eternity,

for example,

seema@coma> simple_client | more

If I ''kill'' the Server Daemon, then control is eventually returned back
to the shell. I need to make it work because
i want to integrate executable with the shell script. Can somebody
please explain how to fix it?

这可能是因为更多实用程序在输出之前读取整个文件

。所以，这里更多不会产生任何输出，直到

simple_client关闭其输出流（或退出关闭所有流）。

This is probably because more utility reads a whole file before
outputting it. So, here more does not produce any output until
simple_client closes its output stream (or exits closing all streams).

se********@yahoo.co.in 写道：


[]

se********@yahoo.co.in wrote:

[]

有人可以解释一下如何修复它吗？

Can somebody please explain how to fix it?

尝试使用less而不是更多。

Try using less instead of more.

这篇关于将stdout重定向到管道'挂起'的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！