From af4d361f6ac90864ea05dadc98cbe50c4a565e9b Mon Sep 17 00:00:00 2001
From: James Barnett <jbarnet4@tulane.edu>
Date: Mon, 7 Nov 2016 12:01:34 -0600
Subject: [PATCH] add commandline description; initial help flag (#3)

---
 bin/snap-sync | 28 +++++++++++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

diff --git a/bin/snap-sync b/bin/snap-sync
index 98a2ed1..11b2bba 100755
--- a/bin/snap-sync
+++ b/bin/snap-sync
@@ -9,7 +9,33 @@
 
 set -e
 
-declare -r description="latest incremental backup"
+while [[ $# -gt 0 ]]; do
+    key="$1"
+    case $key in
+        -d|--description)
+            description="$2"
+            shift
+        ;;
+#TODO   -u|--UUID)
+#           uuid_cmdline="$2"
+#           shift
+#       ;;
+# TODO: add more
+        -h|--help)
+            echo "Usage:"
+            echo "    snap-sync -d 'Snapshot description'"
+            shift
+            exit 1
+        ;;
+        *)
+            echo "Error: unknown option."
+            exit 1
+        ;;
+    esac
+    shift
+done
+
+description=${description:-"latest incremental backup"}
 
 if [[ $EUID -ne 0 ]]; then
     printf "Script must be run as root.\n"