First version

README.md

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+
+
+Install
+=======
+
+Install `msmtp` package:
+
+	sudo apt install msmtp
+
+Configuration, see [ubuntu-rf.org](https://doc.ubuntu-fr.org/tutoriel/comment_envoyer_un_mail_par_smtp_en_ligne_de_commande)
+
+
+Use
+===
+
+To add it to the cron tab:
+
+	crontab -e
+
+The add new line (to run the check once per hour)
+
+	1 * * * * /home/alban/outils/warn-if-broken/warn-if-broken-url.sh >/dev/null 2>&1
+
+
+**Note:**
+ - Normaly cron send task outputs (echo) via mail. As the MTA (Mail Transfert Agent), may not be set up,
+the crontab line redirect the outputs into `/dev/null`.
+ - No sudo is needed, msmtp and crontab are call with current user.
+ - The logs can be seen using (with sudo): `sudo grep CRON /var/log/syslog`

example.msmtprc

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+account default
+tls on
+host mail.gandi.net
+port 587
+
+tls_starttls on
+tls_certcheck on
+tls_trust_file /etc/ssl/certs/ca-certificates.crt
+
+from Service Caracals <service@caracals.org>
+
+auth on
+user service@caracals.org
+password XXXXXX

msg.txt

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+From: Service Caracals <service@caracals.org>
+To: alban.bronisz@gmail.com
+Subject: Cachet est mort !!!!
+
+Voir https://status.caracals.org

warn-if-broken-url.sh

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+#!/usr/bin/env bash
+set -eu
+
+
+URL="https://status.caracals.org"
+
+SCRIPT_PATH="$( cd "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )"
+
+pushd ${SCRIPT_PATH} > /dev/null
+
+if ret=$(curl -s -f "${URL}"); then
+    echo "Marche"
+else
+    echo "Marche pôs"
+    cat msg.txt | msmtp alban.bronisz@gmail.com
+fi
+
+popd