====== Сервис Telegram ======

  * [[https://linuxscriptshub.com/send-telegram-message-linux-scripts/]]
  * [[https://core.telegram.org/bots/tutorial|From BotFather to 'Hello World']]
  * [[https://dev.to/nathannosudo/bash-script-to-send-a-message-in-telegram-from-your-terminal-20c7|Bash Script to Send a Message in Telegram from your Terminal!]]
  * [[https://stackoverflow.com/questions/32423837/telegram-bot-how-to-get-a-group-chat-id|Telegram Bot - how to get a group chat id?]]

<code>
BotFather

/newbot

choose name: Val spec N

choose username: ValspecNbot

...
You will find it at t.me/Valspec2bot
...
Use this token to access the HTTP API:
823268117438:AAE5W1PlK3ex0udwaQeznHG5ejsQNXc-J58
...
</code><code>
/start
...
</code><code>
https://api.telegram.org/bot823268117438:AAE5W1PlK3ex0udwaQeznHG5ejsQNXc-J58/getUpdates
</code><code>
...
        "chat": {
          "id": 1776721761
...
</code><code>
$ cat send-to-telegram.sh
</code><code>
#!/bin/sh

[ "$1" ] && MESSAGE=$1 || MESSAGE="Hello, world!"
#MESSAGE=$(cat)

 TOKEN="768604181156:AAGB1Qwvd-DAPhFbQiMKR3InggtIvPPEtT8"
CHAT_ID="1776721761"
curl -s -X POST https://api.telegram.org/bot$TOKEN/sendMessage -d chat_id=$CHAT_ID -d text="$MESSAGE"
</code><code>
$ time make buildworld; /home/val/send-to-telegram.sh FINISH
</code>

  * [[Использование библиотеки PAM#Использование pam_exec для регистрации подключений]]
<code>
debian:~# chmod 700 /usr/local/bin/send-to-telegram.sh
</code>