Question: I am learning how to use Putty to access Linux servers and I am looking into setting directory permissions at the moment. For this, I did some simple test commands. I created a test directory and set the permissions to 0 like so

```
chmod 000 myTestDir

```

My understanding is that the first digit sets the permission for the owner of the directory, the second digit sets the permission for groups (which I am not sure what they are) and the third digit sets permissions for the rest of the world.

So now I tried to delete the folder in my ftp client, logged into the server using the same credentials as in Putty. I wasn't able to delete it which was the expected behavior since I set the permission to 0.

However, I was still able to delete the directory in Putty doing

```
rmdir myTestDir

```

Why am I able to delete the directory? I set the permission to non-readable, non-writable. Does using Putty command line automatically override those permissions?

Answer: 
After waiting about 10 minutes the background scanning ended to 100% and now Netbeans is usable again.
I had the same problem. I had to do an SMC reboot of my laptop and it fixed it.

For the newer unibody (non-removable battery) MacBooks it is done by 

1. Power down the laptop.
2. Hold Left Shift, Left Control, Left Option and the Power button together, and then let go.
3. Power on the laptop.

Hope that works for you!