The Linux used by the Raspberry Pi is the Debian system, so the Raspberry Pi enable root and Debian are the same. The root account in Debian does not have a default password, but the account is locked.
When Root is required, the default account is executed via sudo, and the Raspbian Default user in the Raspberry Pi system is the pi password of Raspberry.
Re-open the root account, can be logged by the Pi user, the command line execution
sudo passwd root
After executing this command, you will be prompted to enter the root password two times, enter the password you want to set, and then perform the
sudo passwd--unlock root
This will allow you to unlock the root account. Use SU root to switch to the root account.3 Raspberry Pi Wireless Card configuration
By configuring the/etc/network/interfaces file implementation
The contents of the modified file are as follows:
Auto loiface lo inet loopbackiface eth0 inet dhcpauto wlan0allow-hotplug wlan0iface wlan0 inet dhcpwpa-< C2>ssid "Your WiFi name" WPA-PSK "Your WiFi password"
The specific line configuration means the following:
// indicates the use of localhost // If there is a network card ech0, then use DHCP to obtain the IP address (this network card is the local network card, not the WiFi network card) // indicates that if there is a WLAN device, use the WLAN0 device name // indicates that the WLAN device can be hot-swappable // If you have a WLAN NIC Wlan0 (which is the WiFi network card), use DHCP to obtain the IP address wpa-ssid "Your WiFi name"// indicates the connection SSID name WPA-PSK " Your WiFi password "// means when connecting WiFi network, using WPA-PSK authentication, authentication password
After the above definition, if there is a network cable connection, then take the DHCP automatic connection to obtain the address, using the command
or use the following command
After success, you can see the wlan0 device with the ifconfig command and have an IP address.
Update the source test, wired or wireless network connection through, we later on the software update is, we need to first update the list of updates, execute the following command:
Go to the Configuration menusudo apt-get update
If the current Raspberry Pi is already logged into the Graphics desktop system, open the terminal and enter the configuration menu.
Raspberry Pi Study