From 07eca289d314414a7bf96ee263d81c1455d9bc7a Mon Sep 17 00:00:00 2001
From: Guo Xiang Tan <tgx_world@hotmail.com>
Date: Fri, 5 Oct 2018 12:18:20 +0800
Subject: [PATCH] Fix invalid bash syntax.

---
 config/unicorn_launcher | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/config/unicorn_launcher b/config/unicorn_launcher
index b35a811c86d..2014f0284ea 100755
--- a/config/unicorn_launcher
+++ b/config/unicorn_launcher
@@ -31,7 +31,7 @@ function on_reload()
   done
 
   count=0
-  while [ "$count" -lt 30 -a -z `ps -f --ppid $NEW_UNICORN_PID | grep worker | head -1 | awk '{ print $2 }'` ]; do
+  while [ "$count" -lt 30 -a -z $(ps -f --ppid $NEW_UNICORN_PID | grep worker | head -1 | awk '{ print $2 }') ]; do
     log "Waiting for new unicorn workers under $NEW_UNICORN_PID to start up..."
     count=$((count+1))
     sleep 1