From 67e1e751b6bfb4127999de021aa116e04046c17d Mon Sep 17 00:00:00 2001
From: Robert Alessi <alessi@robertalessi.net>
Date: Thu, 19 Dec 2019 20:13:59 +0100
Subject: test  with -n (more portable)

---
 x200-my.initd | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/x200-my.initd b/x200-my.initd
index 3601df0..400eaab 100644
--- a/x200-my.initd
+++ b/x200-my.initd
@@ -58,7 +58,7 @@ do_backup() {
 do_privacy() {
     if [ $enable_privacy = "true" ]
     then
-	if [[ $wired_interface && ${wired_interface-_} ]]
+	if [ -n "${wired_interface}" ]
 	then
 	    rm -rf /etc/dhcpcd.duid
 	    /sbin/macchanger -r $wired_interface
-- 
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