From 61da58308077c5cc21747048e0c5f27c22131291 Mon Sep 17 00:00:00 2001
From: Bridget Kromhout <bridget@kromhout.org>
Date: Wed, 28 Feb 2018 21:44:58 -0600
Subject: [PATCH] Don't overwrite ip file if exists

---
 prepare-vms/lib/commands.sh | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/prepare-vms/lib/commands.sh b/prepare-vms/lib/commands.sh
index c5dd969e..bcabd102 100644
--- a/prepare-vms/lib/commands.sh
+++ b/prepare-vms/lib/commands.sh
@@ -39,7 +39,10 @@ _cmd_cards() {
     need_tag $TAG
     need_settings $SETTINGS
 
-    aws_get_instance_ips_by_tag $TAG >tags/$TAG/ips.txt
+    # If you're not using AWS, populate the ips.txt file manually
+    if [ ! -f tags/$TAG/ips.txt ]; then
+      aws_get_instance_ips_by_tag $TAG >tags/$TAG/ips.txt
+    fi
 
     # Remove symlinks to old cards
     rm -f ips.html ips.pdf