[LUG] Bash: pointers?

[Simon Williams <systemparadox@xxxxxxxxxxxxxx>]

For some strange reason I keep encountering this problem when dealing 
with network devices.

Basically I have shell variables set such as
eth0="eth0 up 192.168.0.1 netmask 255.255.255.0"

which are used something like:
ifconfig $eth0

What I want to do is change the above line to something like:
ifconfig ${$device}

where device=eth0, so that bash substitutes it to give:
ifconfig $eth0

Anyone know if this sort of thing is possible? I have no idea what it 
would actually be called.

Thanks
Simon

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