Simple script to check if your NodeMCUs are reachable on your network

NodeMCU-Check.sh

#! /bin/bash

#DESCRIPTION: Pings all the IPs in the list and reports whether or not they are reachable

GREEN='\033[1;32m'
RED='\033[1;31m'
BLUE='\033[1;34m'
THICK='\033[1;37m' #For white backgrounds, use: THICK='\033[1;30m'
NC='\033[0m'

#Fill with your NodeMCUs (no line spaces)
#Format: <nickname>~<IP address>
LIST="Gate~192.168.1.33
Garage~192.168.1.34
Thermometer~192.168.1.35
RGB Light~192.168.1.36"

LISTLENGTH="$( echo "$LIST" | wc -l | tr -dc '0-9' )"

printf "${BLUE}[*] ${NC}Checking ${THICK}$LISTLENGTH${NC} NodeMCUs...\n"

COUNT=0
while read LINE; do

  NAME="$( echo "$LINE" | sed 's/~.*//' )"
  ADDRESS="$( echo "$LINE" | sed -n -e "s/^.*~//p" )"

  ping -c1 -W1 -q $ADDRESS &>/dev/null
  STATUS=$( echo $? )
  if [[ $STATUS == 0 ]] ; then
       printf "\n${GREEN}[*] ${THICK}$NAME${NC}"
       COUNT=$(($COUNT + 1))
  else
       printf "\n${RED}[!] ${THICK}$NAME${NC} ($ADDRESS)"
  fi

done <<< "$LIST"

if [ "$COUNT" == "$LISTLENGTH" ]; then
  printf "\n\n${BLUE}[*] ${NC}All reachable! (${THICK}$COUNT/$LISTLENGTH${NC})\n"
else
  printf "\n\n${RED}[*] ${THICK}$COUNT/$LISTLENGTH${NC} reachable\n"
fi