...pun which refers back to the Bourne shell for Unix, on which Bash was largely built. It is an implementation of the IEEEPOSIX shell specification, and is regularly enhanced to maintain its leadership in the surprisingly crowded field of Linux...
http://www.computerweekly.com/Articles/2008/09/22/232382/hot-skills-bash.htm
Also, for more information, see White paper, Java HotSpot Virtual Machine, v1.4.1 (http://java.sun.com/products/hotspot/docs/white paper/Java_Hotspot_v1.4.1/ Java_HSpot_WP_v1.4.1_1002 ...
http://docs-pro.houston.hp.com/en/526238-002/526238-002.pdf