From 30e77c9722c43304d2423f95a2e07c8d85906ab8 Mon Sep 17 00:00:00 2001
From: Eduard Veit <developer@ev21.de>
Date: Thu, 22 Apr 2021 22:07:12 +0200
Subject: [PATCH] :memo: document loop mode and dig as requirement

---
 CHANGELOG.md |  2 ++
 README.md    | 12 ++++++++++--
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2eaed41..f903f9a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -35,6 +35,8 @@
 
 ### Documentation
 
+* :memo: document loop mode and dig as requirement. [Eduard Veit]
+
 * :memo: update example of .env in README.md. [Eduard Veit]
 
 * :memo: add CHANGELOG.md. [Eduard Veit]
diff --git a/README.md b/README.md
index 8563bf2..0a3ef9e 100644
--- a/README.md
+++ b/README.md
@@ -31,7 +31,8 @@ The following update methods are currently implemented:
 
 ## 📦 Requirements
 
-* `curl` - The minimum requirement for running DynDNS2 operations
+* `curl` - The minimum requirement for all API requests.
+* `dig` - You can get it by installing `dnsutils` (debian/ubuntu/ArchLinux), `bind-utils` (CentOS/RHEL), `bind-tools` (Alpine)
 
 also essential if you are using other APIs:
 
@@ -96,7 +97,14 @@ dynb --ip-mode dualstack --update-method dyndns --provider inwx --domain dyndns.
 ```
 
 ## ⏰ Cron
-To automatically call the script you can use cron.
+
+To automatically call the script you can use either crontab or the script can also run in a loop mode.
+
+### loop mode
+
+Just use the parameter `--interval 60` or the environment variable `DYNB_INTERVAL=60` so the script will check every 60 seconds if it needs to do an update.
+
+### crontab
 
 execute :point_down:
 ```