Monitor the latency to a server (pass IP's in as cli arguments)

monitor_latency

#!/bin/bash
PREV_IFS=$IFS;
IFS=$'\n';

HOSTNAME=$(hostname)
ERRORS=();

for ip in ${*}
do
	LATENCY=$(ping -c 1 $ip | grep  -oEi "time=([0-9.]*)" |awk -F'=' '{print $2}')	
	COMPARISON=$(echo "$LATENCY > 125" | bc)
	if [ $COMPARISON -eq 1 ]; then
		ERRORS+=("\tServer $ip is experiencing high latency from $HOSTNAME ($LATENCY ms)");
	fi	
done

if ! [ -z "$ERRORS" ]; then
	echo -e "High Latency Warning:\n\n${ERRORS[*]}" |
	mail -s "[$HOSTNAME] High Latency Warning" [email-address]
fi

IFS=$PREV_IFS