From 3304fde7a309c28031bc3e41671ff30468de4cc1 Mon Sep 17 00:00:00 2001
From: C-Duv <github.accounts@claude.duvergier.fr>
Date: Sat, 11 Feb 2017 14:58:03 +0100
Subject: [PATCH] Adds "-h" option to display usage guide

---
 README.md            |  5 ++++-
 send-notification.sh | 23 +++++++++++++++++++----
 2 files changed, 23 insertions(+), 5 deletions(-)

diff --git a/README.md b/README.md
index 8d4a0a6..bd66e6b 100644
--- a/README.md
+++ b/README.md
@@ -16,11 +16,14 @@ send-notification.sh "All your base are belong to us"
 ```
 
 ```
-    uptime | send-notification.sh
+uptime | send-notification.sh
 ```
 
+See `send-notification.sh -h`.
+
 ### Configuration :
 
+Script can be configured 
 Edit `send-notification.sh` and set the following variables:
 
 * `USER_LOGIN`
diff --git a/send-notification.sh b/send-notification.sh
index f22de58..cda4383 100644
--- a/send-notification.sh
+++ b/send-notification.sh
@@ -8,10 +8,25 @@
 #
 # Nécessite: sed, sh et wget
 #
-# Possible usages:
-#   send-notification.sh "All your base are belong to us"
-#   echo "All your base are belong to us" | send-notification.sh
-#   uptime | send-notification.sh
+# Possible usages: see usage_help()
+
+
+readonly PROGNAME=$(basename $0)
+
+usage_help () {
+    echo "Possible usages:"
+    echo "* ${PROGNAME} [options] [message]"
+    echo "* echo \"All your base are belong to us\" | ${PROGNAME} [options]"
+    echo ""
+    echo "Options:"
+    echo "* -h         display this help"
+}
+
+while getopts "h" option; do
+    case "$option" in
+        h) usage_help ; exit 0 ;;
+    esac
+done
 
 
 ##