On 5/7/08 12:10 AM, Wolfgang Denk wrote: > In message <[EMAIL PROTECTED]> you wrote: >> >>> [EMAIL PROTECTED] fw_printenv -n hostname ipaddr >>> ## Error: `-n' option requires exactly one argument >>> [EMAIL PROTECTED] 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.]
The "-n" option is not a new feature. It already existed in the code prior to my changes. Per my comments to Markus in a follow-up to his post, I am happy to evaluate extending the "-n" functionality, but would like to do so as a separate effort to the submitted patch which, I believe, stands on its own. Regards, Grant ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ U-Boot-Users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/u-boot-users
