diff --git a/backup b/backup
index 87beaf0..5c2a01f 100755
--- a/backup
+++ b/backup
@@ -1,6 +1,12 @@
 #!/bin/bash
+if [ $# -ne 1 ]; then
+    echo "Usage: $0 <backup_location>"
+    exit 1
+fi
+
+
+BACKUP_LOCATION=$1+"-"+$(date +%Y-%m-%d)
 
-BACKUP_LOCATION="/nas/share/backup-$(date +%Y-%m-%d).tar"
 COMPRESS=false
 
 rm -f $BACKUP_LOCATION