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