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.]
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: [EMAIL PROTECTED]
It is impractical for the standard to attempt to constrain the
behavior of code that does not obey the constraints of the standard.
- Doug Gwyn
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