diff --git a/apt-repo-updater b/apt-repo-updater
index 6c7e3d5..23685af 100755
--- a/apt-repo-updater
+++ b/apt-repo-updater
@@ -1,21 +1,20 @@
 #!/usr/bin/env bash
 
-WORK_DIR=${WORK_DIR:?"WORK_DIR is not set!!"}
-WORK_DIR="$(realpath "$WORK_DIR")"
-INCOME_DIR=${INCOME_DIR:="${WORK_DIR}/income"}
-FAILED_DIR=${FAILED_DIR:="${INCOME_DIR}/failed"}
-CODENAME=(bookworm)
-
 set -o functrace
 set -o nounset
 set -o errtrace
 set -o errexit
 shopt -s nullglob
 
-function msg {
+function msg_base {
+    local prefix="$1" ; shift
     local mesg="$1"; shift
-    printf "====> ${mesg}\n" "$@"
+    printf "${prefix} ${mesg}\n" "$@"
 }
+function msg  { msg_base "====>" "$@" ; }
+function msg1 { msg_base "======>" "$@" ; }
+function msg2 { msg_base "=========>" "$@" ; }
+function msg3 { msg_base "===========>" "$@" ; }
 
 function term_handle {
     if [[ -n "$inotify_pid" ]]
@@ -36,40 +35,89 @@ function build_repo {
     trap 'term_delay' TERM SIGINT INT
 
     local has_deb=0
+    local deb_name=""
+
+    msg1 "start build repository"
 
     local return_code=0
     for deb in "${INCOME_DIR}/"*.deb
     do
         has_deb=1
+        deb_name="$(basename "$deb")"
 
-        msg "start adding $deb"
+        msg2 "start adding $deb_name"
         for codename in "${CODENAME[@]}"
         do
-            msg "adding $deb into $codename"
+            msg3 "adding $deb_name into $codename"
             reprepro includedeb "$codename" "$deb" && return_code=$? || return_code=$?
 
             if [[ "$return_code" -ne 0 ]]
             then
-                msg "failed to add $deb into $codename"
-                msg "copy $deb to $FAILED_DIR/$codename"
+                msg3 "failed to add $deb_name into $codename"
+                msg3 "copy $deb_name to FAILED_DIR/$codename"
                 mkdir -p "$FAILED_DIR/$codename"
                 cp "$deb" "$FAILED_DIR/$codename/"
+            else
+                msg3 "added $deb_name into $codename"
             fi
         done
-        msg "finished adding $deb"
+        msg2 "finished adding $deb_name"
 
-        msg "removing $deb from income dir $INCOME_DIR"
+        msg2 "removing $deb_name from INCOME_DIR"
         rm $deb
     done
 
     if [[ "$has_deb" == 0 ]]
     then
-        msg "no .deb file in $INCOME_DIR, skip this build"
+        msg1 "no .deb file in INCOME_DIR, skip this build"
     fi
 
+    msg1 "finish build repository"
+
     trap 'term_handle' TERM SIGINT INT
 }
 
+if [[ "$#" -eq 0 ]]
+then
+    set -- "$@" --help
+fi
+
+CODENAME=()
+
+while [[ "$#" -gt 0 ]]
+do
+    case $1 in
+        --work-dir)
+            WORK_DIR="$2" ; shift ;;
+        --codename)
+            CODENAME+=("$2") ; shift ;;
+        --help)
+            echo "usage: $0 --work-dir <work_dir>"
+            echo "          [--codename bookworm]..."
+            exit 0
+            ;;
+        *)
+            shift ;;
+    esac
+    shift
+done
+
+WORK_DIR=${WORK_DIR:?"WORK_DIR is not set!!"}
+INCOME_DIR=${INCOME_DIR:="income"}
+FAILED_DIR=${FAILED_DIR:="${INCOME_DIR}/failed"}
+
+if [[ -z "${CODENAME-}" ]]
+then
+    CODENAME+=(bookworm)
+fi
+
+# log environements before actullay run
+msg "WORK_DIR: $WORK_DIR"
+msg "INCOME_DIR: $INCOME_DIR"
+msg "FAILED_DIR: $FAILED_DIR"
+msg "CODENAME: ${CODENAME[*]}"
+msg "============================"
+
 cd "$WORK_DIR"
 
 GO_ON=1             # flag of if continue the loop
@@ -78,7 +126,7 @@ while [[ "$GO_ON" = "1" ]]
 do
     build_repo
 
-    msg "start watching $INCOME_DIR"
+    msg "start watching INCOME_DIR"
     inotifywait --quiet -e move -e modify -e create "$INCOME_DIR" &
     inotify_pid="$!"
 
@@ -88,6 +136,8 @@ do
     #
     # Break the loop when failed to watching (or killed)
     wait $inotify_pid || GO_ON=0
+
+    msg "found directory modify in INCOME_DIR"
 done
 
 msg "$PROGRAM_NAME shutdown"