I'd like to store the values of environment variables in HUSH shell
variables and then restore them later. My ultimate goal is to preserve a
few environment variables through a "env default -f".
I'm working with U-Boot 2010.12. Changing to a newer version is not
possible at this time.
I realize this is a very old U-Boot. I'm hoping that the relevant parts
of U-Boot have not changed between that old version and versions you
might provide help for.
I tried a few things and haven't found the right combination. I think
the following commands demonstrate my problem.
Given the U-Boot commands
=> setenv e "e ethaddr ipaddr rootpath"
=>
=> printenv e ethaddr ipaddr rootpath
e=e ethaddr ipaddr rootpath
ethaddr=00:00:17:88:09:36
ipaddr=10.3.134.80
rootpath=/home/anyuser/a/device/tr/rootfs
=>
=> for i in $e; do v_$i=$i; done
=>
What I get:
=> showvar
HUSH_VERSION=0.01
v_e=e
v_ethaddr=ethaddr
v_ipaddr=ipaddr
v_rootpath=rootpath
=>
What I want:
=> showvar
HUSH_VERSION=0.01
v_e=e ethaddr ipaddr rootpath
v_ethaddr=00:00:17:88:09:36
v_ipaddr=10.3.134.80
v_rootpath=/home/anyuser/a/device/tr/rootfs
=>
So, how do I re-write the for loop to get the desired results
Thanks for any help,
Jim
--
Jim Chargin
AJA Video Systems j...@aja.com
(530) 271-3334 http://www.aja.com
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