ungleich-tools/vpn-statistics.sh

#!/bin/sh
# 2019-09-09, Nico Schottelius
# Show countries / region of VPN clients connected with wireguard

# countries + region
for ip in $(wg | grep endpoint | sed -e 's/endpoint: //' -e 's/\(.*\):[0-9]*/\1/' -e 's/\[//' -e 's/\]//'); do
    curl -s ipinfo.io/$ip | grep -e country -e region;
done

# countries with counter
( for ip in $(wg | grep endpoint | sed -e 's/endpoint: //' -e 's/\(.*\):[0-9]*/\1/' -e 's/\[//' -e 's/\]//'); do curl -s ipinfo.io/$ip | grep -e country ; done  ) | sort | uniq -c | sort -g

# Get number of configured VPNs
configured_vpns=$(wg show  | grep ^peer | wc -l)
active_vpns=$(wg show  | grep endpoint | wc -l)

echo "Configured VPNs: ${configured_vpns}"
echo "Active VPNs: ${active_vpns}"