On 03/10/2014 19:37, Jo-Philipp Wich wrote:
> Hi Michel, John.
>
>>> - for dev in $(ls /sys/class/ieee80211); do
>>> + for dev in $(ls /sys/class/ieee80211 2>/dev/null); do
>> what error do you see ? if you see an error we should try to fix that
>> rather than supressing it
> I suppose the case when "wifi detect" is invoked but no phy exists on
> the system (e.g. because the radio hardware is not installed - think USB).
>
> In this case the entire /sys/class/ieee80211 is likely missing which
> will cause "ls" to print a "No such file or directory" error.
>
> Actually I do not really like that whole "for x in $(ls ...)" construct,
> something like the following would save one fork and also not produce
> errors:
>
> for dev in /sys/class/ieee80211/*; do
> if [ -h "$dev" ]; then
> # do something with ${dev##*/}
> fi
> done
the change from AutoLoad to AutoProbe will cause cfg80211 to not be
loaded if no driver is loaded. hence ieee80211 is missing.
the for loop make sense ...
>
> ~ Jow
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