diff --git a/packaging/tools/install.sh b/packaging/tools/install.sh
index 99c3fade5e..d044804db4 100755
--- a/packaging/tools/install.sh
+++ b/packaging/tools/install.sh
@@ -373,6 +373,7 @@ function add_newHostname_to_hosts() {
   if grep -q "127.0.0.1  $1" /etc/hosts; then
     return
   else
+    ${csudo}chmod 666 /etc/hosts
     ${csudo}echo "127.0.0.1  $1" >>/etc/hosts
   fi
 }
@@ -956,7 +957,7 @@ function updateProduct() {
     echo "${productName2} is updated successfully!"
     echo
     if [ "$verMode" == "cluster" ];then
-      echo -e "\033[44;32;1mTo start all the components       : sudo ./start-all.sh${NC}"
+      echo -e "\033[44;32;1mTo start all the components       : ./start-all.sh${NC}"
     fi
     echo -e "\033[44;32;1mTo access ${productName2}                : ${clientName2} -h $serverFqdn${NC}"
     if [ "$verMode" == "cluster" ];then
diff --git a/packaging/tools/remove.sh b/packaging/tools/remove.sh
index 5b5a7d7c30..b815472cad 100755
--- a/packaging/tools/remove.sh
+++ b/packaging/tools/remove.sh
@@ -275,7 +275,7 @@ function remove_data_and_config() {
   fi
   log_dir=`grep logDir /etc/taos/taos.cfg | grep -v '#' | tail -n 1 | awk {'print $2'}`
   if [ X"$log_dir" == X"" ]; then
-    log_dir="/var/lib/taos"
+    log_dir="/var/log/taos"
   fi
   ${csudo}rm -rf ${config_dir}/*
   ${csudo}rm -rf ${data_dir}/*