你没见过的java 抛IO异常 求解决

Question

java.io.IOException: 断开的管道 
at java.io.FileOutputStream.writeBytes(Native Method) 
at java.io.FileOutputStream.write(FileOutputStream.java:318) 
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) 
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) 
at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) 
at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) 
at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) 
at com.zehin.util.exec.ExecuteCommand.re_excuteCommand(ExecuteCommand.java:60) 命令比如 command="sudo echo 111 > 123.txt" 
re_excuteCommand方法如下 
public static void re_excuteCommand(String command) { 
try { 
Vector<String> commands = new Vector<String>(); 
commands.add("/bin/bash"); 
commands.add("-c"); 
commands.add(command); 
ProcessBuilder p = new ProcessBuilder(commands); 
Process process = p.start(); 
InputStream is = process.getInputStream(); 
InputStreamReader isr = new InputStreamReader(is); 
BufferedReader br = new BufferedReader(isr); 
String line = br.readLine(); 
OutputStreamWriter out = new OutputStreamWriter( 
process.getOutputStream()); 
out.write("123456");//这个是ubuntu的密码 
out.flush(); 
out.close(); 
System.out.println("BASHPID=" + line); br.close(); 
isr.close(); 
is.close(); 
process.destroy(); 
} catch (IOException e) { 
// TODO Auto-generated catch block 
e.printStackTrace(); 
}Java异常Ubuntucommandio