然而，往管道内注入少量的噬菌体，就可以清理整个管道系统，因为噬菌体在消耗生物膜的同时可以自我复制。
A small injection of phages into a water pipe, however, could clean an entire system, with the phages replicating themselves as they consume the biofilm.
Linux和UNIX系统中的管道的优点之一是，与其他流行的操作系统不同，它们的管道不涉及到中间文件。
One advantage of pipes on Linux and UNIX systems is that, unlike some other popular operating systems, there is no intermediate file involved with a pipe.
这一特性是用popen系统调用实现的，该系统调用允许一个进程打开到另一个进程的管道，将管道用于输出或输入。
This feature is implemented using the popen system call, which allows one process to open a pipe to another process, either for output or input. In this case we open a pipe to the command.
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