From a1048c48e467de9feb8f13042affda4d4194e9d3 Mon Sep 17 00:00:00 2001
From: neil <git@byneil.com>
Date: Sun, 17 Apr 2016 20:58:56 +0800
Subject: [PATCH] fix compatible for dash

---
 acme.sh | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/acme.sh b/acme.sh
index 8882b09..001ef04 100755
--- a/acme.sh
+++ b/acme.sh
@@ -720,12 +720,12 @@ _startserver() {
   _debug "_NC" "$_NC"
 #  while true ; do
     if [ "$DEBUG" ] ; then
-      if ! echo -n "HTTP/1.1 200 OK\r\n\r\n$content" | $_NC -p $Le_HTTPPort -vv ; then
-        echo -n "HTTP/1.1 200 OK\r\n\r\n$content" | $_NC $Le_HTTPPort -vv ;
+      if ! printf "HTTP/1.1 200 OK\r\n\r\n$content" | $_NC -p $Le_HTTPPort -vv ; then
+        printf "HTTP/1.1 200 OK\r\n\r\n$content" | $_NC $Le_HTTPPort -vv ;
       fi
     else
-      if ! echo -n "HTTP/1.1 200 OK\r\n\r\n$content" | $_NC -p $Le_HTTPPort > /dev/null 2>&1; then
-        echo -n "HTTP/1.1 200 OK\r\n\r\n$content" | $_NC $Le_HTTPPort > /dev/null 2>&1
+      if ! printf "HTTP/1.1 200 OK\r\n\r\n$content" | $_NC -p $Le_HTTPPort > /dev/null 2>&1; then
+        printf "HTTP/1.1 200 OK\r\n\r\n$content" | $_NC $Le_HTTPPort > /dev/null 2>&1
       fi      
     fi
     if [ "$?" != "0" ] ; then