Script to print wifi network info when using NetworkManager on Ubuntu.

wifi.bash

#!/bin/bash

# Get the name of the current network if one is not provided.
if [ -z "$1" ]; then
  network_name=$(iwconfig 2>&1 | grep "SSID" | cut -d '"' -f2)
else
  network_name=$1
fi

# Probably very system-dependent on Ubuntu and on using NetworkManager.
network_file="/etc/NetworkManager/system-connections/$network_name"

# Check for permissions.
if [ ! -r "$network_file" ]; then
  echo "Permission denied. Try 'sudo'."
  exit 1
fi

# Parse the network password from the file.
network_pass=$(grep "k=" < "$network_file" | sed "s/.*=//g")

printf "SSID: %s\n" "$network_name"
printf "Pass: %s\n" "$network_pass"