From 8b5613b428a60de5962800dd7f41b364cd511a14 Mon Sep 17 00:00:00 2001
From: Bram Prieshof <brammp@noreply.bprieshof.nl>
Date: Fri, 20 Dec 2019 13:43:19 +0000
Subject: [PATCH] 'preconf.sh' updaten

---
 preconf.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/preconf.sh b/preconf.sh
index 68f2369..c84d679 100644
--- a/preconf.sh
+++ b/preconf.sh
@@ -1,6 +1,6 @@
 mrepo=https://git.bprieshof.nl/Work/Test-MySQL
 mbranch=master
-CurDebFrond="$DEBIAN_FRONTEND"
+if [ -z ${DEBIAN_FRONTEND+x} ]; then echo 'env not set' ; else CurDebFrond="$DEBIAN_FRONTEND"; fi #checking and saving DEBIAN_FRONTEND
 export DEBIAN_FRONTEND=noninteractive
 
 if [ -z ${password+x} ]; then echo 'Error $password is not set'; fi
@@ -22,6 +22,6 @@ wget -q -t7 https://dev.mysql.com/get/mysql-apt-config_0.8.13-1_all.deb -O /tmp/
 dpkg -i /tmp/mysql-apt-conf.deb > $OUTPUT 2>&1
 
 
-export DEBIAN_FRONTEND=$CurDebFrond
+if [ -z ${CurDebFrond+x} ]; then unset DEBIAN_FRONTEND ; else export DEBIAN_FRONTEND=$CurDebFrond; fi #Restore DEBIAN_FRONTEND
 unset mrepo
 unset mbranch
\ No newline at end of file