Generate Wi-Fi QR Code (https://news.ycombinator.com/item?id=27803146)

generate_wifi_qrcode.sh

# 1

qrencode -t utf8 'WIFI:T:WPA;S:network;P:password;;'

# 2

read -rp "SSID: " ssid
read -rsp "Password: " pass
echo -e "\n"
qrencode -t utf8 "WIFI:T:WPA;S:$ssid;P:$pass;;"
echo "SSID: $ssid"

# 3

#!/usr/bin/env bash
out="${1:-wifi-card.pdf}"
read -rp "SSID: " ssid
read -rsp "Password: " pass
echo -e "\nGenerating PDF..."
{
cat << EOF
<table>
<tr>
<td><img src="data:image/png;base64,$(qrencode -o - -t png "WIFI:T:WPA;S:$ssid;P:$pass;;" | base64)"></td>
<td><span>SSID: $ssid</span><br><span>Password: $pass</span></td>
</tr>
</table>
<p>
<img width=16 height=16 src="https://raw.githubusercontent.com/iamcal/emoji-data/master/img-apple-64/1f4f8.png">
<img width=16 height=16 src="https://raw.githubusercontent.com/iamcal/emoji-data/master/img-apple-64/1f4f1.png">
Point your phone's camera at the QR Code to connect automatically.
</p>
EOF
} | pandoc --pdf-engine=xelatex -f html -t pdf -o "$out"
echo "$out"