From 0a7c9364427f925130b24233f608a55986a56761 Mon Sep 17 00:00:00 2001
From: neil <git@byneil.com>
Date: Sun, 17 Apr 2016 19:47:22 +0800
Subject: [PATCH] modify shebang to bash after install if bash is installed.

---
 acme.sh             | 29 +++++++++++++++++++++++++++--
 dnsapi/dns_cf.sh    |  2 +-
 dnsapi/dns_cx.sh    |  2 +-
 dnsapi/dns_dp.sh    |  2 +-
 dnsapi/dns_myapi.sh |  2 +-
 5 files changed, 31 insertions(+), 6 deletions(-)

diff --git a/acme.sh b/acme.sh
index 0453240d..697dc233 100755
--- a/acme.sh
+++ b/acme.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 VER=2.2.1
 
 PROJECT_NAME="acme.sh"
@@ -1844,6 +1844,19 @@ _precheck() {
   return 0
 }
 
+_setShebang() {
+  _file="$1"
+  _shebang="$2"
+  if [ -z "$_shebang" ] ; then
+    _err "Usage: file shebang"
+    return 1
+  fi
+  cp "$_file" "$_file.tmp"
+  echo "$_shebang" > "$_file"
+  sed -n 2,99999p  "$_file.tmp" >> "$_file"
+  rm -f "$_file.tmp"  
+}
+
 install() {
 
   if ! _initpath ; then
@@ -1937,7 +1950,19 @@ install() {
   fi
   
   installcronjob
-  
+
+  #Modify shebang
+  if _exists bash ; then
+    _info "Good, bash is installed, change the shebang to use bash as prefered."
+    _shebang='#!/usr/bin/env bash'
+    _setShebang "$LE_WORKING_DIR/$PROJECT_ENTRY" "$_shebang"
+    if [ -d "$LE_WORKING_DIR/dnsapi" ] ; then
+      for _apifile in $(ls "$LE_WORKING_DIR/dnsapi/"*.sh) ; do
+        _setShebang "$_apifile" "$_shebang"
+      done
+    fi
+  fi
+
   _info OK
 }
 
diff --git a/dnsapi/dns_cf.sh b/dnsapi/dns_cf.sh
index a6c15763..2aac3404 100755
--- a/dnsapi/dns_cf.sh
+++ b/dnsapi/dns_cf.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 
 #
diff --git a/dnsapi/dns_cx.sh b/dnsapi/dns_cx.sh
index 19758022..070a2ad6 100644
--- a/dnsapi/dns_cx.sh
+++ b/dnsapi/dns_cx.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 # Cloudxns.com Domain api
 #
diff --git a/dnsapi/dns_dp.sh b/dnsapi/dns_dp.sh
index a5043799..510384ab 100644
--- a/dnsapi/dns_dp.sh
+++ b/dnsapi/dns_dp.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 # Dnspod.cn Domain api
 #
diff --git a/dnsapi/dns_myapi.sh b/dnsapi/dns_myapi.sh
index 3c5b8651..f06cc1e6 100644
--- a/dnsapi/dns_myapi.sh
+++ b/dnsapi/dns_myapi.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 #Here is a sample custom api script.
 #This file name is "dns_myapi.sh"