Bash script to test a list of Astrill Servers and returns the one with the best ping. Currently only works for the TCP servers (I am open to a way to test UDP servers). Only tested on OSX, should work fine on linux too.

fastest-server.sh

#!/bin/bash

# INSTRUCTIONS
# After generating the OpenVPN server certificates, download and unzip then run this script in the same directory. 
# Don't forget to chmod +x fastest-server.sh after downloading
#
# To test all servers with UK in the name
# sudo ./fastest-server.sh UK
# To test all servers with USA in the name
# sudo ./fastest-server.sh USA
#

PING_TIMES=1
OUTPUT_FILE="results.csv"
SEARCH_PATTERN=$1

command -v hping >/dev/null 2>&1 || { echo >&2 "I require hping but it's not installed.\nYou can install it with brew install hping"; exit 1; }

if [[ $UID != 0 ]]; then
    echo "Please run this script with sudo:"
    echo "sudo $0 $*"
    exit 1
fi

if [[ $SEARCH_PATTERN == "" ]]; then
    echo "Please run this script with a search pattern:"
    echo "$0 <search_pattern>"
    exit 1
fi



RESULTS=()
PATTERN="*${SEARCH_PATTERN}*.ovpn"
FILES=`find . -name "$PATTERN" -type f`
echo $FILES
COUNT=`find . -name "$PATTERN" -type f -exec printf '.' \; | wc -c | tr -d ' '`

if [[ $COUNT -eq "0" ]]; then
    echo "Couldn't find any files with $SEARCH_PATTERN in the name"
    exit 1
fi

echo "Found $COUNT VPN Servers"
COUNTER=1
for i in $FILES; do
  REMOTE=`cat "$i" | grep remote`
  SERVER=`echo "$REMOTE" | cut -f2 -d' ' | tr -d $'\n'`
  PORT=`echo "$REMOTE" | cut -f3 -d' ' | tr -d $'\r' | tr -d $'\n'`
  NAME=`basename "$i" | tr -d $'\n'`
  #echo "Pinging Server ${NAME} (${SERVER}:$PORT)"
  #PINGTIME=`ping -c 4 $SERVER | tail -1| awk -F '/' '{print $5}'`
  if [[ "$NAME" == *"TCP"* ]]; then
    RESULT=`hping -c $PING_TIMES -S -p "$PORT" -q "$SERVER" 2>&1 | grep "round-trip" | tr -d ' ' | cut -f2 -d'=' | cut -f2 -d/`
  else
    RESULT=`hping -c $PING_TIMES --udp -p "$PORT" -q "$SERVER" 2>&1 | grep "round-trip" | tr -d ' ' | cut -f2 -d'=' | cut -f2 -d/`
  fi
  greater=`echo $RESULT'>'0 | bc -l`
  if [ $greater == 1 ]; then
    RESULTS+=("${NAME},${RESULT}")
  fi
  COUNTER=$[$COUNTER +1]
  echo "$NAME $RESULT"
  # if [[ $COUNTER == 5 ]]; then
  #   break
  # fi
done

printf "%s\n" "${RESULTS[@]}" > "${SEARCH_PATTERN}_${OUTPUT_FILE}"

echo "Top 5 VPN Results"
echo "================="
sort --field-separator=',' -g -k 2,2 -k 1,1 "$OUTPUT_FILE" | awk '!/0.0/' | head -n5 | tr ',' ''