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假如要在java程序里执行一条linux可以用下面的写法Java代码

Processprocess=Runtime.getRuntime().exec(cmd);

process.waitFor();

Processprocess=Runtime.getRuntime().exec(cmd);process.waitFor();

但是当碰到像cd这样的命令时，上面的这种写法切不管用，很多时候我们以为是命令输错了或是文件找不到。

现在提供一种新的执行命令方法：Java代码

Filewd=newFile("/bin");

System.out.println(wd);

Processproc=null;

try{

proc=runtime.getruntime().exec("/bin/bash",null,wd);

}

catch(IOExceptione){

e.printStackTrace();

}

if(proc!=null){

BufferedReaderin=newBufferedReader(newInputStreamReader(proc.getInputStream()));

PrintWriterout=newPrintWriter(newBufferedWriter(newOutputStreamWriter(proc.getOutputStream())),true);

out.println("cd..");

out.println("pwd");

out.println("exit");

try{

Stringline;

while((line=in.readLine())!=null){

System.out.println(line);

}

proc.waitFor();

in.close();

out.close();

proc.destroy();

}

catch(Exceptione){

e.printStackTrace();

}}

Filewd=newFile("/bin");System.out.println(wd);Processproc=null;try{proc=runtime.getruntime().exec("/bin/bash",null,wd);}catch(IOExceptione){e.printStackTrace();}if(proc!=null){BufferedReaderin=newBufferedReader(newInputStreamReader(proc.getInputStream()));PrintWriterout=newPrintWriter(newBufferedWriter(newOutputStreamWriter(proc.getOutputStream())),true);out.println("cd..");out.println("pwd");out.println("exit");try{Stringline;while((line=in.readLine())!=null){System.out.println(line);}proc.waitFor();in.close();out.close();proc.destroy();}catch(Exceptione){e.printStackTrace();}}