CSP进程与actors的不同之处在于，它比单个邮箱有更丰富的输入和输出通道集。

CSP processes differ from actors in having a much richer set of input and output channels than a single mailbox.

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作为可以快速且简单易读的脚本，在对外部进程的输入和输出进行文本处理方面，rexx无懈可击，而且学习和安装也不困难。

For quick and easily readable scripts that perform text manipulation on the inputs and outputs of external processes, Rexx is hard to beat, and not hard to learn or install.

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当发生活动时，inetd 把入站请求映射到标准输入 (stdin)、标准输出 (stdout) 和标准错误 (stderr)，并启动适当的守护进程。

When activity occurs, inetd maps the incoming request to standard input (stdin), standout output (stdout), and standard error (stderr) and launches the proper daemon.

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