The Kindles run Busybox Ash, which has less features and other differences from Bash.
But there is a lot more documentation available for Bash.
A link for your reference bookmarks:
http://www.tldp.org/LDP/abs/html/
Your distribution of Linux probably has it installed:
Code:
core2quad ~ $ busybox ash
BusyBox v1.18.4 (Ubuntu 1:1.18.4-2ubuntu2) built-in shell (ash)
Enter 'help' for a list of built-in commands.
~ $ whatever
ash: whatever: not found
~ $ exit
core2quad ~ $
It is unlikely that your distribution will be running the same **version** that the Kindles are, but for other than final testing, a way to develop on your 'larger' machine.