init file for ash

[qobi at purdue.edu (Jeffrey Mark Siskind)]

Does the default shell (Busy box ash) have a scripting language? If so, what
is the syntax for setting an environment variable, something like:

export RSYNC_SSH=ssh

Is there an init script that is automatically run upon login or starting ash?
Something like ~/.login or ~/.profile? If so, what are they called?

    Jeff (http://www.ece.purdue.edu/~qobi)