#!/bin/bash
host="el1 el2 el3 el4 el5 el6 el7 el8 el9 el10 el11 el12"
per="1200"


export DISPLAY=":0"
ping -c 1 google.com -w 3 > /dev/null
if [ $? != 0 ];then
exit
fi;

for h in $host;do
ping -c 1 $h -w 3 > /dev/null
if [ $? != 0 ];then
    if [ ! -f /tmp/checker_${h}_send.lock ] || [ "`expr \`stat -c %Y /tmp/checker_${h}_send.lock  \` + $per`" -lt "`date +%s`" ];then
        rm -f /tmp/checker_${h}_send.lock
        notify-send "Сервер ${h}
не ответил на ping" -u low  -t 10000
        touch /tmp/checker_${h}_send.lock
    fi;

fi;
done