From d3b81486722f4b293a5359be0f7263dda877bbe6 Mon Sep 17 00:00:00 2001
From: Justin Schneck <jschneck@mac.com>
Date: Sat, 3 Feb 2018 09:56:29 -0500
Subject: [PATCH] fix nerves.system.shell for mac os

---
 CHANGELOG.md            |  1 +
 lib/mix/nerves/shell.ex | 10 +++++++++-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 27a120ce..e7af7f7c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
     * Fix artifact archiver to use `Artifact.download_name/1` instead of 
       `Artifact.name/1`. Fixes issues with the Docker provider and
       `mix nerves.artifact`
+    * Fix issue with `nerves.system.shell` not rendering properly
 
 ## Nerves v0.9.3
 
diff --git a/lib/mix/nerves/shell.ex b/lib/mix/nerves/shell.ex
index 8b090c6b..2d319b79 100644
--- a/lib/mix/nerves/shell.ex
+++ b/lib/mix/nerves/shell.ex
@@ -9,8 +9,16 @@ defmodule Mix.Nerves.Shell do
     stdin_port = Port.open({:spawn, "tty_sl -c -e"}, [:binary, :eof, :stream, :in])
 
     # We run the command through the script command to emulate a pty
+    cmd = 
+      "script -q /dev/null " <>
+      case Nerves.Env.host_os() do
+        "linux" ->
+          "-c \"#{command}\""
+        _ -> "#{command}"
+      end
+    
     cmd_port =
-      Port.open({:spawn, "script -q /dev/null -c \"#{command}\" "}, [
+      Port.open({:spawn, cmd}, [
         :binary,
         :eof,
         :stream,