Raspberrypi

#iwconfig # sudo iwlist wlan0 scan update /etc/wpa_supplicant/wpa_supplicant.conf  for open wifi network={ ssid="testing" key_mgmt=NONE } or the output of this command if use psk # wpa_passphrase "<SSID>" "<SSIDpassword>" see https://www.raspberrypi.org/documentation/configuration/wireless/wireless-cli.md Check if you can connect # sudo wpa_supplicant -iwlan0 -c /etc/wpa_supplicant/wpa_supplicant.conf #sudo /etc/init.d/networking restart ------------------ Time sync Open rc.local file sudo nano /etc/rc.local add following line to the rc.local file sudo date -s "$(wget -qSO- --max-redirect=0 google.com 2>&1 | grep Date: | cut -d' ' -f5-8)Z" reboot the Rpi sudo reboot source: https://raspberrypi.stackexchange.com/questions/47542/raspberry-pi-wont-update-time ----------------- go to or create /etc/apt/apt.conf.d/10proxy then add Acquire::http::Proxy "http://usern