luxzg · February 10, 2024 15:32 · luxzg · Feb 10, 2024
diff --git a/ping_test_01.sh b/ping_test_01.sh
 #!/bin/bash

 # script by LuxZg 2024-02-10 ; simple ping idea by Gordon (see below)

 # call this script in bash like this (you can use some other IP):
 # ./ping_test_01.sh 8.8.8.8

 # Telegram information - MAKE SURE YOU HAVE YOUR OWN TELEGRAM BOT SET UP ALREADY!
 # you only need to change TOKEN and ID, nothing else needs to be changed in this script!
 # optionally change the time zone (in 3 places, scroll down) and path to the .log file (by the end)
 TOKEN="putyour:bottoken-inhere"
 ID="yourchatID"
 URL="https://api.telegram.org/bot$TOKEN/sendMessage"
 # initialize the MESSAGE so we're starting blank, but so we know it was reset
 MESSAGE="Start session - "

 # simple ping check thanks to StackOverflow answer:
 # Gordon Davisson, Dec 16, 2022 at 22:35
 # https://stackoverflow.com/a/74830395/13312932

 # If the target is initially up, we need to print that
 # before going into the monitor loop.
 if ping -c 1 $1 &> /dev/null
 then
 # instead echo, we will put the message in the MESSAGE variable
    MESSAGE+="Target is up at: $(TZ='Europe/Zagreb' date) - "
 # for testing we can echo the MESSAGE
 #    echo ${MESSAGE}
 fi

 while :
 do
    # At this point in the script, the target is either
    # up and we need to wait for it to go down, or we
    # just started and it's down (in which case this
    # loop will exit immediately).
    while ping -c 1 $1 &> /dev/null
    do
        sleep 5
    done

    # At this point, it's gone down; print a note, and
    # wait for it to come back up.
 # again, instead echo, concatenate the new info to MESSAGE
    MESSAGE+="Target is down at: $(TZ='Europe/Zagreb' date) - "
 # and we can test with echo
 #    echo ${MESSAGE}
    until ping -c 1 $1 &> /dev/null
    do
        sleep 5
    done

    # It's back up! Print another note, then go back to
    # waiting for it to fail.
 # one last time, concatenate to MESSAGE
    MESSAGE+="Target is up at: $(TZ='Europe/Zagreb' date) - "
 # and we can test with echoing the MESSAGE
 #    echo ${MESSAGE}
 # if device is up and link is up, means we can send the MESSAGE to Telegram bot
 # and log the bot response to local .log file
    curl -s -X POST $URL -d chat_id=$ID -d text="${MESSAGE}" >> /home/localadmin/ping_test_01.log
 # we reset the MESSAGE for the next loop
    MESSAGE="Start new session - "
 #    echo ${MESSAGE}
 done
	#!/bin/bash

	# script by LuxZg 2024-02-10 ; simple ping idea by Gordon (see below)

	# call this script in bash like this (you can use some other IP):
	# ./ping_test_01.sh 8.8.8.8

	# Telegram information - MAKE SURE YOU HAVE YOUR OWN TELEGRAM BOT SET UP ALREADY!
	# you only need to change TOKEN and ID, nothing else needs to be changed in this script!
	# optionally change the time zone (in 3 places, scroll down) and path to the .log file (by the end)
	TOKEN="putyour:bottoken-inhere"
	ID="yourchatID"
	URL="https://api.telegram.org/bot$TOKEN/sendMessage"
	# initialize the MESSAGE so we're starting blank, but so we know it was reset
	MESSAGE="Start session - "

	# simple ping check thanks to StackOverflow answer:
	# Gordon Davisson, Dec 16, 2022 at 22:35
	# https://stackoverflow.com/a/74830395/13312932

	# If the target is initially up, we need to print that
	# before going into the monitor loop.
	if ping -c 1 $1 &> /dev/null
	then
	# instead echo, we will put the message in the MESSAGE variable
	MESSAGE+="Target is up at: $(TZ='Europe/Zagreb' date) - "
	# for testing we can echo the MESSAGE
	# echo ${MESSAGE}
	fi

	while :
	do
	# At this point in the script, the target is either
	# up and we need to wait for it to go down, or we
	# just started and it's down (in which case this
	# loop will exit immediately).
	while ping -c 1 $1 &> /dev/null
	do
	sleep 5
	done

	# At this point, it's gone down; print a note, and
	# wait for it to come back up.
	# again, instead echo, concatenate the new info to MESSAGE
	MESSAGE+="Target is down at: $(TZ='Europe/Zagreb' date) - "
	# and we can test with echo
	# echo ${MESSAGE}
	until ping -c 1 $1 &> /dev/null
	do
	sleep 5
	done

	# It's back up! Print another note, then go back to
	# waiting for it to fail.
	# one last time, concatenate to MESSAGE
	MESSAGE+="Target is up at: $(TZ='Europe/Zagreb' date) - "
	# and we can test with echoing the MESSAGE
	# echo ${MESSAGE}
	# if device is up and link is up, means we can send the MESSAGE to Telegram bot
	# and log the bot response to local .log file
	curl -s -X POST $URL -d chat_id=$ID -d text="${MESSAGE}" >> /home/localadmin/ping_test_01.log
	# we reset the MESSAGE for the next loop
	MESSAGE="Start new session - "
	# echo ${MESSAGE}
	done