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