texture libraries

Anyone know of any texture libraries that are free for commercial use (ie a BSD style license)?

I need trees and signs and stuff to draw on some sprites.

Hi I have a bash script i need to run, I have placed it in usr/local/bin how do i get it to execute from terminal, i have read i need to change permission 1st would like to know how, Do i have to cd to directory then chmod x filename . If not some help plz