Hi Bastian, thanks for replying.
The line I referred to is in wpa_supplicant.sh line 167.
Then, according to your explanation, in the script wpa_supplicant.sh
line 167, that means the variable fixed will have a value of
"fixed_freq=1" right? I guess this option is only enabled on the sta
mode, doesn't it? I ask this, because I´m trying to understand how the
client knows the AP channel or frequency...
thanks again
2013/5/16 Bastian Bittorf <bitt...@bluebottle.com>:
> * Francisco Cuesta <ndarkn...@gmail.com> [16.05.2013 18:32]:
>> Thanks for replying Bastian,
>>
>> Do you know the meaning of the ${fixed:+"fixed_freq=1"} ?? I mean,
>> this fixes the vaule of the frequency but for what value?
>
> i can only see:
>
> line 335:
> [ "$channel" = "auto" -o "$channel" = "0" ] || {
> fixed=1
> }
>
> line 528:
> ${fixed:+fixed-freq}
>
> which means: if channel is auto or 0, than
> the freq is NOT fixed, so dont insert the statement.
>
> the syntax:
> ${variable:+bla}
>
> means: has variable a value, than output "bla", which is the same like
> [ -n "$variable" ] && echo "bla"
>
> (but often used inline)
> for further explenation read here:
> http://tldp.org/LDP/abs/html/parameter-substitution.html
>
> bye, bastian
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