Question: `/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/universal-darwin13/rbconfig.rb:213: warning: Insecure world writable dir /usr in PATH, mode 040777`

I've tried these two commands after searching for solutions on Stackexchange, but it didn't work for me. It still shows me the warning which I've pasted above.

```
sudo chmod 775 /usr/local

sudo chmod go-w /usr/local/bin

```

How do I fix this warning message? I'm running OS X 10.9 Mavericks

Answer: 
Learn to read the error messages closely.

```
Insecure world writable dir /usr in PATH

```

Note it's not saying `/usr/local`.

To confirm this diagnosis, use

```
 ls -ld /usr
 drwxrwxrwx  14 ownerID  groupID     4096 Dec 10  2010 /usr
 #-------^-  is the world-writeable  part

```

As you know, you can fix it with

```
 sudo chmod 755 /usr

```

**Edit**

Folks, See my scripted solution over [here](https://stackoverflow.com/questions/29570203/unix-installer-cant-find-path-to-file-even-though-im-entering-the-exact-path/29571473#29571473).
I fixed this by using Disk Utility to repair disk permissions.

Open the Disk Utility application and select the disk your system is installed on. Then you can select "Repair Disk Permissions" from the First Aid tab. Repair will take a couple of minutes