In message 87myn2ehqm.fsf@denx.de you wrote:
root@kilauea# fw_printenv -n hostname ipaddr ## Error: `-n' option requires exactly one argument root@kilauea# echo $? 1
But I don't understand what the purpose of the "-n" option is?
The purpose seems clear to me - print the value of a variable without the name. This can be useful in shell scripts, for example when you want to do something like
$ ipaddr=`fw_printenv -n ipaddr`
However, the addition of this feature is undocumented (not mentioned in the commit message), and I don;t see why we should restrict it to a single variable - it may be useful to print several values here, too, for example like that:
$ set `fw_printenv -n netdev ipaddr netmask` $ ifconfig $1 $2 netmask $3
[Well, I know that's a bad example because it's missing all error checking, but you get the idea.]
Best regards,
Wolfgang Denk