java执行cmd命令和linux命令

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　　文章出处http://blog.csdn.net/xh16319/article/details/17302947
　　一：window下执行cmd指定



一：window下执行cmd指定
程序例子：
[java] view plain copy
/*该方法实现文件自动复制功能。利用系统命令将指定文件名从源路径复制到目的路径
* 如果目的路径不存在时，自动创建目的路径
* */   
public static boolean copyFile(String origpath, String destpath, String filename) throws Exception{  
String osName = System.getProperty("os.name");  
boolean flag = false;  
/*系统命令支持的操作系统Windows XP, 2000 2003 7*/  
if(!(osName.equalsIgnoreCase("windows XP") || osName.equalsIgnoreCase("windows 2000") || osName.equalsIgnoreCase("windows 2003") || osName.equalsIgnoreCase("windows 7"))){  
return flag;  
}  
Runtime rt = Runtime.getRuntime();  
Process p = null;  
File f = new File(destpath);  
if(!f.exists()){  
f.mkdirs();  
}  
int exitVal;  
p = rt.exec("cmd exe /c copy " + origpath+filename+" "+destpath);  
// 进程的出口值。根据惯例，0 表示正常终止。   
exitVal = p.waitFor();  
if(exitVal == 0){  
flag = true;  
}else{  
flag = false;  
}  
return flag;      

}  
public static void main(String[] args) {  
try {  
copyFile("D:\\DATA\\", "D:\\a\\", "131204.txt");  
} catch (Exception e) {  
// TODO Auto-generated catch block  
            e.printStackTrace();  
}  

}  
二：linux下执行shell命令
程序例子：
[java] view plain copy
package edu.test;  
import java.io.InputStreamReader;  
import java.io.LineNumberReader;  
/**
* java在linux环境下执行linux命令，然后返回命令返回值。
* @author lee
*/  
public class ExecLinuxCMD {  
public static Object exec(String cmd) {  
try {  
String[] cmdA = { "/bin/sh", "-c", cmd };  
Process process = Runtime.getRuntime().exec(cmdA);  
LineNumberReader br = new LineNumberReader(new InputStreamReader(  
process.getInputStream()));  
StringBuffer sb = new StringBuffer();  
String line;  
while ((line = br.readLine()) != null) {  
System.out.println(line);  
sb.append(line).append("\n");  
}  
return sb.toString();  
} catch (Exception e) {  
e.printStackTrace();  
}  
return null;  
}  
public static void main(String[] args) {  
// TODO Auto-generated method stub  
String pwdString = exec("pwd").toString();  
String netsString = exec("netstat -nat|grep -i \"80\"|wc -l").toString();  
System.out.println("==========获得值=============");  
System.out.println(pwdString);  
System.out.println(netsString);  
}  
}  
执行结果：

Java调用命令行并获取执行结果



import java.io.BufferedReader;  
import java.io.InputStreamReader;  

public class Command {  
public static void exeCmd(String commandStr) {  
BufferedReader br = null;  
try {  
Process p = Runtime.getRuntime().exec(commandStr);  
br = new BufferedReader(new InputStreamReader(p.getInputStream()));  
String line = null;  
StringBuilder sb = new StringBuilder();  
while ((line = br.readLine()) != null) {  
sb.append(line + "\n");  
}  
System.out.println(sb.toString());  
} catch (Exception e) {  
e.printStackTrace();  
}   
finally  
{  
if (br != null)  
{  
try {  
br.close();  
} catch (Exception e) {  
e.printStackTrace();  
}  
}  
}  
}  
public static void main(String[] args) {  
String commandStr = "ping www.taobao.com";  
//String commandStr = "ipconfig";  
        Command.exeCmd(commandStr);  
}  
}