java调用shell命令并获取执行结果

使用到Process和Runtime两个类，返回值通过Process类的getInputStream()方法获取

package ark;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

public class ReadCmdLine {
	public static void main(String args[]) {
		Process process = null;
		List processList = new ArrayList();
		try {
			process = Runtime.getRuntime().exec("ps -aux");
			BufferedReader input = new BufferedReader(new InputStreamReader(process.getInputStream()));
			String line = "";
			while ((line = input.readLine()) != null) {
				processList.add(line);
			}
			input.close();
		} catch (IOException e) {
			e.printStackTrace();
		}

		for (String line : processList) {
			System.out.println(line);
		}
	}
}

调用shell脚本，判断是否正常执行，如果正常结束，Process的waitFor()方法返回0

	public static void callShell(String shellString) {
		try {
			Process process = Runtime.getRuntime().exec(shellString);
			int exitValue = process.waitFor();
			if (0 != exitValue) {
				log.error("call shell failed. error code is :" + exitValue);
			}
		} catch (Throwable e) {
			log.error("call shell failed. " + e);
		}
	}