From e73c89c4cd6b782dfbbd2e964812aca44d3fb383 Mon Sep 17 00:00:00 2001
From: Gardais Jeremy <jeremy.gardais@univ-rennes1.fr>
Date: Thu, 15 Feb 2018 16:52:51 +0100
Subject: [PATCH] Don't try to unlink lts file if link doesn't exists

---
 scripts/download_ubuntu.sh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/scripts/download_ubuntu.sh b/scripts/download_ubuntu.sh
index 9c5d5fe..15173b7 100755
--- a/scripts/download_ubuntu.sh
+++ b/scripts/download_ubuntu.sh
@@ -27,7 +27,9 @@ for DISTRO in artful ${LTS}; do
 done
 
 # Link the LTS distribution name to lts
-unlink ${TFTP_DIRECTORY}/installer/ubuntu/lts
+if [ -L "${TFTP_DIRECTORY}/installer/ubuntu/lts" ]; then
+	unlink ${TFTP_DIRECTORY}/installer/ubuntu/lts
+fi
 ln -s ${LTS} ${TFTP_DIRECTORY}/installer/ubuntu/lts
 
 exit 0