java如何调用Linux命令呢?

下文笔者讲述java代码调用linux命令的方法及示例
学习完本篇之后，你将掌握java代码操作linux的方法，如下所示

使用
 Runtime.getRuntime().exec("linux命令")
即可运行linux命令

例:Java运行Linux命令的示例

package com.java265;
 
import java.io.IOException;  
public class TestLinuxCmd {
  
	public static void main(String[] args) {
		 Process proc = null;
		try {
			//创建文件
			String touchCmd = "touch hello.txt";
			proc = Runtime.getRuntime().exec(touchCmd);
			proc.waitFor(); //阻塞，直到上述命令执行完
			
			//管道类命令要用这种方式
			String[] cmds = {"/bin/sh","-c","echo helloworld > hello.txt"};
			proc = Runtime.getRuntime().exec(cmds);
			proc.waitFor(); //阻塞，直到上述命令执行完
			
			//删除文件
			String rmCmd = "rm -rf needrm.txt";
			proc = Runtime.getRuntime().exec(rmCmd);
			proc.waitFor(); //阻塞，直到上述命令执行完
			
			//执行文件
			String bashCmd = "bash mkfolder.sh";
			proc = Runtime.getRuntime().exec(bashCmd);
			proc.waitFor(); //阻塞，直到上述命令执行完
		} catch (InterruptedException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	} 
}

//使用Runtime调用命令并获得结果

package com.java265; 
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
  
public class TestRunCmd {
 
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		try {
			String cmd = "ls -ahl";
			
			String line = null;
			StringBuilder sb = new StringBuilder();
			Runtime runtime = Runtime.getRuntime();
			Process proc = runtime.exec(new String[] {"/bin/sh", "-c", cmd});
			BufferedReader br = new BufferedReader(new InputStreamReader(proc.getInputStream()));
			while((line = br.readLine()) != null) {
				sb.append(line + "\n");
			}
			String result = sb.toString();
			
			System.out.println("执行结果：" + result);
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}