fi
else
echo "wwan[$$]" "Searching for a valid wwan usb device..."
- for a in `ls /sys/bus/usb/devices`; do
+ for a in $(ls /sys/bus/usb/devices); do
local vendor product
[ -z "$usb" -a -f /sys/bus/usb/devices/$a/idVendor -a -f /sys/bus/usb/devices/$a/idProduct ] || continue
vendor=$(cat /sys/bus/usb/devices/$a/idVendor)