From cb5ef43b99423d7b0e0553ff2c12d73afcf5597e Mon Sep 17 00:00:00 2001
From: Amaury Louarn <git@homnomnom.fr>
Date: Fri, 17 Jan 2020 23:54:53 +0100
Subject: [PATCH] folder copy with mutex

---
 folder-copy.sh | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 folder-copy.sh

diff --git a/folder-copy.sh b/folder-copy.sh
new file mode 100644
index 0000000..f7bedb7
--- /dev/null
+++ b/folder-copy.sh
@@ -0,0 +1,15 @@
+#!/bin/bash
+
+lockfile=lock
+
+: >> ${lockfile}
+
+exec 9>${lockfile}
+if ! flock -n 9  ; then
+    #Another instance is running
+    exit 1
+fi
+
+#TODO: rsync
+
+: > ${lockfile}