From d762b6ba889af7f37e3529416b8ab851f18d250e Mon Sep 17 00:00:00 2001
From: ziqiaozhou <ziqiao@cs.unc.edu>
Date: Thu, 27 Sep 2018 19:58:52 -0400
Subject: [PATCH] update travis

---
 .travis.yml | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 2d3b1bdf..3badf3f3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -18,15 +18,18 @@ script:
 - if [ -f ${CACHE}/.config ];then echo "exist .config";else make O=../build oldconfig;fi
 - rm .config*
 - if [[ -f ${CACHE}/touch_order.txt ]]; then
-  while fn in `cat ${CACHE}/touch_order.txt`; do
+  for fn in `cat ${CACHE}/touch_order.txt`; do
   touch $fn;
   done;
   fi
 - if [[ -f ${CACHE}/previous_git_commit.txt ]]; then
  read PREVIOUS_GIT_COMMIT < ${CACHE}/previous_git_commit.txt;
  changed_files=`git diff --name-only $PREVIOUS_GIT_COMMIT HEAD`; 
+ echo ${changed_files},${#changed_files};
+ if [ "${#changed_files}" -gt "0" ];then
  touch `echo $changed_files`;
  fi
+ fi
 
 - make O=../build -j$(nproc)
 - make O=../build deb-pkg -j4