如何在Perl中刷新文件? [英] How do I flush a file in Perl?

问题描述

我有Perl脚本，该脚本每3秒向现有文件追加一条新行.另外，还有一个C ++应用程序可以读取该文件.

I have Perl script which appends a new line to the existing file every 3 seconds. Also, there is a C++ application which reads from that file.

问题在于脚本完成并关闭文件句柄后，应用程序开始读取文件.为了避免这种情况，我想在每行追加后刷新，但是我是Perl的新手，不知道该怎么做.

The problem is that the application begins to read the file after the script is done and file handle is closed. To avoid this I want to flush after each line append, but I'm new to Perl and don't know how to do that.

推荐答案

尝试:

use IO::Handle;
$fh->autoflush;

这实际上是作为自动冲洗的一种方式发布在早期问题中我的，询问了实现这一目标的普遍接受的坏方法:-)

This was actually posted as a way of auto-flushing in an early question of mine, which asked about the universally accepted bad way of achieving this :-)

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