update readme

readme.md

@@ -67,7 +67,7 @@ DEBUG: You can test and mess around. Do not use certs in production.
 HELP
 
 The basic syntax is
-cm.sh ACTION [FQDN] [ALIAS_1 [.. ALIAS_N]]
+cm.sh [--trace] ACTION [FQDN] [ALIAS_1 [.. ALIAS_N]]
 
 The ACTIONs for SINGLE certificate handlings are:
 
@@ -121,6 +121,10 @@ other ACTIONs
                 check of health with current setup and requirements.
                 This command is helpful for initial setups.
 
+OPTIONS
+        --trace (it must be the 1st parameter) 
+                the output additionally will be written into a tracelog file 
+                below ./log.
 
 DEBUG: Using Let's Encrypt STAGE environment ...
 DEBUG: You can test and mess around. Do not use certs in production.
@@ -131,8 +135,8 @@ DEBUG: You can test and mess around. Do not use certs in production.
 
 A certificate is created for a host and can have additional DNS names (optional).
 For integration into a system deployment with Ansible & co the `ensure` prameter
-is the best choice because it detects what action is required. 
-The command 
+is the best choice because it detects what action is required.
+The command
 
 `[APPPATH]/cm.sh ensure www.example.com mail.example.com`
 
@@ -145,10 +149,9 @@ The "manual way" with atomic actions is:
 * Modify hostnames with add command `[APPPATH]/cm.sh add www.example.com mail.example.com newhost.example.com` what creates a new certificate. Optionally you can/ should revoke the existing certificate with the former host list before (see next command). The impact is: Your SSL certificate on the website is invalid up to the moment you create and deploy the new certificate what can take a few minutes. If you maintain many certificates with the same domain and the request limit is reached your application can be broken broken for an even longer time.
 * Deletin the certificates includes a revoke `[APPPATH]/cm.sh delete www.example.com`
 
-
 ### Show certificate data
 
-Use the listing `[APPPATH]/cm.sh list` or maybe filter it `[APPPATH]/cm.sh list | grep "mail."` 
+Use the listing `[APPPATH]/cm.sh list` or maybe filter it `[APPPATH]/cm.sh list | grep "mail."`
 
 to get a list of existing certs an then use the hostname in the 1st column to show details: