在脉码调制技术中，按照确定的代码由字符信号对模拟信号量化采样的表示法。

In pulse code modulation, the representation of the quantized samples of an analogue signal by character signals according to a defined code.

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因此，您可以定义一个函数，使其执行与killall相同的基于字符串的信号发送功能(请参见清单7)。

Therefore, you can define a function that performs the same string-based signaling as killall (see Listing 7).

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该命令的关键部分是能够识别正在运行的进程，提取与给定字符串匹配的进程，并使用 kill 命令将 KILL 信号发送到每个匹配进程。

The key component to the command is the ability to identify running processes, extract the ones matching a given string, and use the kill command to send the KILL signal to each matching process.

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