readme

forward-email-to-slack-webhook/README.md

@@ -1,10 +1,25 @@
 # send emails to root to slack
 
-# prerequisites
+## slack side
 
-`apt update && apt -y install git python3 make postfix`
+First you must go [here](https://api.slack.com/incoming-webhooks) and create
+a new slack app and choose a channel and get a webhook URL.
 
-# install
+```
+mkdir -p /etc/environment.d
+echo 'https://hooks.slack.com/services/XXXXXX/XXXXXXX/xxxxxxxxxxxxxxxx' >
+    /etc/environment.d/SLACK_WEBHOOK_URL
+```
+
+## prerequisites
+
+```
+export DEBIAN_FRONTEND=noninteractive
+apt update
+apt -y install git python3 make postfix daemontools
+```
+
+## install helper
 
 ```
 mkdir -p /etc/environment.d
@@ -13,10 +28,9 @@ git clone https://github.com/sneak/hacks.git /tmp/hacks && \
     make install
 ```
 
-and
+## example usage
 
-```
-mkdir -p /etc/environment.d
-echo 'https://hooks.slack.com/services/XXXXXX/XXXXXXX/xxxxxxxxxxxxxxxx' >
-    /etc/environment.d/SLACK_WEBHOOK_URL
-```
+`apt install -y smartmontools`
+
+Now you'll get a slack notification when your disk is going to die, because
+smartmontools emails root by default when it detects problems.