Hardware Reference
In-Depth Information
his command will return a list of all the wireless networks reachable from the Pi and their
details (see Figure 4-4). If you receive an error message at this point—in particular, one that
claims the network or interface is down—check that you have installed the correct irmware,
and that the USB wireless adapter is connected to a powered USB hub.
Figure 4-4:
Scanning
for wireless
networks with
iwlist
You can check the current status of the network using the
iwconfig
command. Like
ifconfig
, the
iwconfig
command allows you to check the status of a network interface
and issue coniguration commands. Unlike
ifconfig
, however,
iwconfig
is speciically
designed for wireless networks and includes speciic features for this. Type the command
name at the terminal as follows:
iwconfig
he output of
iwconfig
, as shown in Figure 4-5, is split into the following sections:
❍
Interface Name—
Each device has its own interface name, as with wired networks. If
the interface is a wireless connection, additional details will be shown. he default
name for a Pi's wireless connection is
wlan0
.
