许多文本处理命令（过滤器）可以从标准输入流或从文件中获取输入。
Many text processing commands (filters) can take input either from the standard input stream or from a file.
可以将它们用作过滤器，或者将文件名作为命令的参数。
They can be used as filters, or they can take a filename as an argument.
由于tr是纯粹的过滤器，因此您将使用cat命令为其生成输入。
Since tr is purely a filter, you generate input for it using the cat command.
如同我们目前已经了解的许多文本命令一样，seb可以充当一个过滤器，或者从文件中获取其输入。
As with many of the text commands we have looked at so far, sed can work as a filter or take its input from a file.
现在，我们具备了一些基本的工具来实现管道和重定向，让我们研究一些常见的UNIX和Linux文本处理命令和过滤器。
Now that we have a couple of basic tools for pipelining and redirection, let's look at some of the common UNIX and Linux text processing commands and filters.
要将命令command1的输出作为过滤器command2的输入，您需要使用管道操作符(|)连接两个命令。
In order to use the output of a command, command1, as input to a filter, command2, you connect the commands using the pipe operator (|).
在本文中，我们将使用“学习Linux, 101：文本流和过滤器”一文中创建的文件来练习命令。
In this article, we will practice the commands using the files created in the article "Learn Linux 101: Text streams and filters."
WebSphereApplicationServerInformationCenter记录了一些交互式命令和过滤器，用于获取关于正在运行的应用程序的信息。
The WebSphere application Server information Center documents the interactive commands and filters you can use to get more information about running applications.
命令行日志过滤器检查。
如果您有要求来自stdin的输出的过滤器，那么可以考虑使用cat命令将文件复制到 stdout。
If you do have a filter that requires input from stdin, you might think of using the cat command to copy the file to stdout, which would work.
在本文中，我们将使用文章“学习Linux, 101：文本流和过滤器”中建立的文件练习命令。
In this article, we will practice the commands using some of the files created in the article "Learn Linux 101: Text streams and filters."
这个命令经常结合管道和过滤器来一起使用的。
It is often used with pipes and filters. Here are a couple of examples.
分发名单在命令只能在过滤器的路线进入路由表，但它并不妨碍链接国家包被宣扬。
The distribute-list in command only filters routes from entering the routing table, but it doesn't prevent link-state packets from being propagated.
分发名单在命令只能在过滤器的路线进入路由表，但它并不妨碍链接国家包被宣扬。
The distribute-list in command only filters routes from entering the routing table, but it doesn't prevent link-state packets from being propagated.
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