From 24d79ca11be830a1c008534576eb79588bc04219 Mon Sep 17 00:00:00 2001
From: smlng <s@mlng.net>
Date: Tue, 19 Dec 2017 17:56:48 +0100
Subject: [PATCH] tools/tapsetup: try to retrieve user name if not set

---
 dist/tools/tapsetup/tapsetup | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/dist/tools/tapsetup/tapsetup b/dist/tools/tapsetup/tapsetup
index 6cb867d27e..539a19fbcb 100755
--- a/dist/tools/tapsetup/tapsetup
+++ b/dist/tools/tapsetup/tapsetup
@@ -175,8 +175,11 @@ while true ; do
 done
 
 if [ -z "${USER}" ]; then
-    echo 'need to export $USER'
-    exit 1
+    export USER=$(id -un)
+    if [ -z "${USER}" ]; then
+        echo 'need to export $USER'
+        exit 1
+    fi
 fi
 if [ -z "${COMMAND}" ]; then
     COMMAND="create"