recursively set 777 permissions in java without using NIO

Question

Is there a way to set 777 permissions on a path recursively(so that all directories on the path get 777 permissions) without using NIO.

We can do it for the last leaf of a given file by methods in the file class like below

import java.io.File;
import java.nio.file.FileSystems;


public class permissionTest {

    public static void main(String [] args){
        String dir = "./leaf1/leaf2/leaf3";

        File baseDir = new File(dir);

        boolean success = baseDir.mkdirs();
        if (success) {
            System.out.println("Created dirs");
            baseDir.setExecutable(true, false);
            baseDir.setReadable(true, false);
            baseDir.setWritable(true, false);
        }
        else{
            System.out.println("Not created");
        }

    }

}

the above gives 777 to leaf3 , how to give 777 to leaf1 & leaf2 as well? In a single command?

What's the reason why you don't want to set the permissions using multiple commands? — Bartvbl, Oct 30 '14 at 08:42
there should be a better way like chmod -R:) , also not great to do it for deeply nested paths — nikel, Oct 30 '14 at 08:42
You want to give 777 to the current and 2 previous parent ? It is usually the other way around, apply 777 to the parent directory and all his childs — ortis, Oct 30 '14 at 08:43
if i give 777 to leaf1 in example above , leaf2 and leaf3 won't get it — nikel, Oct 30 '14 at 08:49
Also, I have a legacy component running on Java 6, can't switch to java7 just for this... — nikel, Oct 30 '14 at 08:54

Srinivasu · Accepted Answer · 2014-10-30T08:49:44.613

5

Process p;
        try {
            p = Runtime.getRuntime().exec("chmod 777 -R ./leaf1");
            p.waitFor();

        } catch (Exception e) {
            e.printStackTrace();
        }

edited Oct 30 '14 at 08:49

answered Oct 30 '14 at 08:43

Srinivasu

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This could give "collateral damage" too: it might also set permissions on folders that you don't want to change. – Bartvbl Oct 30 '14 at 08:43
yep, and i was looking for a java based approach...not using chmod. i think this approach is slower – nikel Oct 30 '14 at 08:49
@Bartvbi It is exactly what the OP asked for: "all directories on the path get 777 permissions". – user207421 Oct 30 '14 at 08:51
@nikel Slower than what? – user207421 Oct 30 '14 at 09:04

recursively set 777 permissions in java without using NIO

1 Answers1