diff --git a/scripts/lib/color.sh b/scripts/lib/color.sh
index 17471bb0d..0259b2643 100755
--- a/scripts/lib/color.sh
+++ b/scripts/lib/color.sh
@@ -14,6 +14,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+# this script is used to install the dependencies of the project
+#
+# Usage: `scripts/color.sh`.
+################################################################################
+
 # Define color variables
 # --- Feature --- 
 COLOR_NORMAL='\033[0m';COLOR_BOLD='\033[1m';COLOR_DIM='\033[2m';COLOR_UNDER='\033[4m';
@@ -54,24 +59,28 @@ blue=$(tput bold; tput setaf 6)
 timeout=$(if [ "$(uname)" == "Darwin" ]; then echo "1"; else echo "0.1"; fi)
 
 # --- helper functions for logs ---
-info()
+function info()
 {
     echo -e "[${GREEN_PREFIX}INFO${COLOR_SUFFIX}] " "$@"
 }
-warn()
+
+function warn()
 {
     echo -e "[${YELLOW_PREFIX}WARN${COLOR_SUFFIX}] " "$@" >&2
 }
-fatal()
+
+function fatal()
 {
     echo -e "[${RED_PREFIX}ERROR${COLOR_SUFFIX}] " "$@" >&2
     exit 1
 }
-debug()
+
+function debug()
 {
     echo -e "[${BLUE_PREFIX}DEBUG${COLOR_SUFFIX}]===> " "$@"
 }
-success()
+
+function success()
 {
     echo -e "${BRIGHT_GREEN_PREFIX}===> [SUCCESS] <===${COLOR_SUFFIX}\n=> " "$@"
 }
diff --git a/scripts/lib/util.sh b/scripts/lib/util.sh
index fadc715af..6f314ee67 100755
--- a/scripts/lib/util.sh
+++ b/scripts/lib/util.sh
@@ -16,7 +16,7 @@
 # this script is used to check whether the code is formatted by gofmt or not
 #
 # Usage: source scripts/lib/util.sh
-
+################################################################################
 
 #1、将IP写在一个文件里，比如文件名为hosts_file，一行一个IP地址。
 #2、修改ssh-mutual-trust.sh里面的用户名及密码，默认为root用户及密码123。
@@ -832,8 +832,6 @@ function openim::util::run::relative() {
     done
 }
 
-trap "echo" EXIT
-
 
 # input: [10023, 2323, 3434]
 # output: 10023 2323 3434
diff --git a/scripts/lib/version.sh b/scripts/lib/version.sh
index 65f9bb353..04eb89b09 100755
--- a/scripts/lib/version.sh
+++ b/scripts/lib/version.sh
@@ -12,7 +12,6 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-
  
 # -----------------------------------------------------------------------------
 # Version management helpers.  These functions help to set, save and load the