current-wifi-pass-on-mac.sh

#!/bin/bash

# git clone https://gist.github.com/kvbik/2f90a73d3acd9fb1ef4d2a45c5f9cfe8

# current macos wifi connection, thx to
#   https://apple.stackexchange.com/questions/81221/how-do-i-get-wi-fi-info-from-within-terminal
W=$(
  /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport -I | \
  sed -n '/^[ ]*SSID: / s/^[ ]*SSID: //p'
)
# current macos wifi password, thx to
#   https://www.labnol.org/software/find-wi-fi-network-password/28949/
P=$(
  security find-generic-password -wa "$W"
)

echo "$W" >/dev/stderr
echo "$P" >/dev/stderr
# you really want to avoid the \n in the QR code
echo -n "$P" | qr # pip install qrcode

one-liner.sh

security find-generic-password -wa "$(
  /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport -I | \
  sed -n '/^[ ]*SSID: / s/^[ ]*SSID: //p'
)" | tee /dev/stderr | head -n1 | while read pwd; do echo -n $pwd | qr; done

output.png