tub_cert_dir='/usr/local/share/certs/tu-berlin.de' tub_cert="${tub_cert_dir}/tu-cert.pem" tub_cert_url='https://www.tubit.tu-berlin.de/fileadmin/a40000000/tubIT/Trustcenter/chain.txt' mkdir -- "${tub_cert_dir}" fetch -o "${tub_cert}" "${tub_cert_url}" tubit_username='xxx' tubit_password='password' cat << EOF >> /etc/wpa_supplicant.conf network={ ssid="eduroam" key_mgmt=WPA-EAP pairwise=CCMP group=CCMP TKIP eap=PEAP ca_cert="${tub_cert}" identity="${tubit_username}@win.tu-berlin.de" domain_suffix_match="tubit.tu-berlin.de" phase2="auth=MSCHAPV2" password="${tubit_password}" } EOF