java调用shell命令并获取执行结果的示例

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<String> processList = new ArrayList<String>();
		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);
		}
	}
}

	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);
		}
	}