Raspberry Pi setup to send IP changes via telegram
# /lib/dhcpcd/dhcpcd-hooks/99-telegram | |
# | |
# Notify telegram chat of ip changes | |
# man dhcpcd-run-hooks for variables | |
TELEGRAM=/home/pi/bin/telegram | |
if $if_up; then | |
case "$reason" in | |
BOUND|BOUND6) | |
if [ "${new_ip_address}" != "${old_ip_address}" ]; then | |
$TELEGRAM "$(hostname) (Raspberry) got ${new_ip_address} on ${interface}. Was ${old_ip_address}." | |
fi | |
;; | |
REBOOT) | |
$TELEGRAM "$(hostname) (Raspberry) got ${new_ip_address} on ${interface} after reboot. Uptime: `uptime`" | |
;; | |
*) | |
$TELEGRAM "$(hostname) (Raspberry) got ${new_ip_address} on ${interface}. Was ${old_ip_address}. Reason: ${reason}" | |
;; | |
esac | |
fi |
#!/bin/bash | |
# usage: telegram <message> | |
# strict mode | |
set -euo pipefail | |
# Fill these | |
API_KEY='' | |
CHAT_ID='' | |
function sendMessage { | |
echo "sending" | |
# local MSG="${1:?No message given}" | |
curl -i -X GET -G \ | |
--data-urlencode "chat_id=${CHAT_ID}" \ | |
--data-urlencode "text=${1:?No message given}" \ | |
"https://api.telegram.org/bot${API_KEY}/sendMessage"; | |
} | |
sendMessage "$@" |
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