http://meta.ath0.com/2012/02/05/apples-great-gpl-purge/
After reading this, I couldn't stop myself from checking whether the decision from #Apple to ship #ZSH as standard shell might be related to it. As mentioned in the article #BASH was already very old and newer versions are #GPLv3 licensed. And I thought, if they want to make the shell neat out of the box, why not using #FISH as default? Here it comes:
ZSH is licensed under #MIT (-alike)
FISH is licensed under #GPL
Programmer, OpenSource enthusiast and hacker based in Berlin, Germany.