收集Linux命令输出 [英] Collect Linux command output

问题描述

我现在在linux机器上。我有一个Java程序可以运行一些linux命令，例如 ps ， top ， list 或 free -m 。

I am now on a linux machine. I have a Java program which would run some linux command, for example ps, top, list or free -m.

在Java中运行命令的方法如下：

The way to run a command in Java is as follows:

Process p = Runtime.getRuntime().exec("free -m");

我如何通过Java程序收集输出？我需要处理输出中的数据。

How could I collect the output by Java program? I need to process the data in the output.

推荐答案

使用 Process.getInputStream（） 获取 InputStream 表示新创建的进程的标准输出。

Use Process.getInputStream() to get an InputStream that represents the stdout of the newly created process.

请注意，从Java启动/运行外部进程可能非常棘手并且非常复杂一些陷阱。

Note that starting/running external processes from Java can be very tricky and has quite a few pitfalls.

它们在这篇优秀文章，也介绍了解决这些问题的方法。

They are described in this excellent article, which also describes ways around them.

这篇关于收集Linux命令输出的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！