import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.attribute.PosixFileAttributes;
import java.nio.file.attribute.PosixFilePermission;
import java.nio.file.attribute.PosixFilePermissions;
import java.util.Set;

/**
 * Change file attributes (Linux)
 */
public class ChangeFileAttributesJava
{
	public static void main(String[] args) throws IOException
	{
		Path path = Paths.get("/tmp/test-file.txt");
		if (!Files.exists(path))
		{
			Files.createFile(path);
		}

		Set<PosixFilePermission> perms = Files.readAttributes(path, PosixFileAttributes.class).permissions();

		System.out.format("Permissions before: %s%n", PosixFilePermissions.toString(perms));

		perms.add(PosixFilePermission.OWNER_WRITE);
		perms.add(PosixFilePermission.OWNER_READ);
		perms.add(PosixFilePermission.OWNER_EXECUTE);
		perms.add(PosixFilePermission.GROUP_WRITE);
		perms.add(PosixFilePermission.GROUP_READ);
		perms.add(PosixFilePermission.GROUP_EXECUTE);
		perms.add(PosixFilePermission.OTHERS_WRITE);
		perms.add(PosixFilePermission.OTHERS_READ);
		perms.add(PosixFilePermission.OTHERS_EXECUTE);
		Files.setPosixFilePermissions(path, perms);

		System.out.format("Permissions after:  %s%n", PosixFilePermissions.toString(perms));

	}
}