Re: chmod

Thank you for your reply.

It worked for me (with the escaped characters).  Are you sure

it's not because of the '/' at the beginning of your filename?

Is your file really in the '/' directory?

Yes, the file really exists on the path.

Does chmod work with this file when invoked from a Terminal window? Runtime.exec is a bit different, in that the input is not run through a shell (Terminal uses the bash shell by default). If it works from Terminal, try exec-ing a shell command, e.g.

   new String[] {

       "/bin/csh", "-c", "chmod g+w '/xxxxx.txt'"

   }

I tried the code but it didn't work too.

I finally found the code which works well:

public static boolean chmod (File path,String auth,boolean recursive)
{
boolean check = false;

Process process = null;
BufferedOutputStream bos = null;
try
{
process = Runtime.getRuntime ().exec (new String [] {"/bin/sh","-s"});

bos = new BufferedOutputStream (process.getOutputStream ());
bos.write (("chmod " + (recursive ? "-R " : "") + auth + " \"" + path.getCanonicalPath () + "\"\n").getBytes ("UTF-8"));
bos.flush ();
bos.close ();

process.waitFor ();
check = process.exitValue () == 0;
process.destroy ();
}
catch (InterruptedException ie)
{
check = false;
ie.printStackTrace ();
}
catch (IOException ioe)
{
check = false;
ioe.printStackTrace ();
}
finally
{
if (process != null) process.destroy ();
try {if (bos != null) bos.close ();} catch (IOException ioe) {ioe.printStackTrace ();}
}

return check;
}

Thank you.

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