diff --git a/makedeb b/makedeb
index 2a5fc6d..ad35667 100755
--- a/makedeb
+++ b/makedeb
@@ -8,7 +8,8 @@ pkgdir="${workspace}/pkg"
 
 FAKE_PACKAGE=0
 OVERRIDE_SOURCE=0
-
+SHOW_TARGET_FILE=0
+QUIET=0
 
 set -o functrace
 set -o nounset
@@ -40,14 +41,17 @@ fi
 readonly ALL_OFF BOLD BLUE GREEN RED YELLOW
 
 function msg {
+    (( QUIET )) && return 0
     local mesg=$1; shift
     printf "${GREEN}==>${ALL_OFF}${BOLD} ${mesg}${ALL_OFF}\n" "$@"
 }
 function msg2 {
+    (( QUIET )) && return 0
     local mesg=$1; shift
     printf "${BLUE}  ->${ALL_OFF}${BOLD} ${mesg}${ALL_OFF}\n" "$@"
 }
 function err {
+    (( QUIET )) && return 0
     local mesg=$1; shift
     printf "${RED}  ->${ALL_OFF}${BOLD}${RED} ${mesg}${ALL_OFF}\n" "$@" >&2
 }
@@ -82,6 +86,8 @@ EOF
 }
 
 function generate_deb {
+    msg "generating deb package..."
+
     local tmpdir="$(mktemp --directory)"
     local data_tgz="${tmpdir}/data.tar.gz"
     local control_tgz="${tmpdir}/control.tar.gz"
@@ -304,79 +310,48 @@ function is_function {
     declare -F "$1" > /dev/null
 }
 
+function check_source_validation {
+    # check if all source is valid
+    for s in "${source[@]}"; do
+        if ! grep "::" <<< "$s" > /dev/null; then
+            err "source must contain \"::\" to specify file name"
+            exit 1
+        fi
+    done
+}
 
-##
-## Here start the build logic
-##
+function clean_dir {
+    msg "cleaning \$srcdir and \$pkgdir..."
+    rm -rf "${srcdir}" "${pkgdir}"
+    mkdir -p "${srcdir}" "${pkgdir}"
+}
 
-while (( "$#" >= 1 )); do
-    case "$1" in
-        -F)  FAKE_PACKAGE=1 ;;
-        -OS) OVERRIDE_SOURCE=1 ;;
-        *)   err "Unkown option $1"; break ;;
-    esac
-    shift
-done
+function retrieve_source {
+    msg "retrieving source..."
+    for s in "${source[@]}"; do
+        file_name="${s%%::*}"
+        url="${s##*::}"
 
-source "${buildfile}"
+        retrive_source_single "${file_name}" "${url}"
+    done
+}
 
-# Run package and generate deb and exit
-if (( FAKE_PACKAGE )); then
+function extract_source {
+    msg "extracting source..."
+    for s in "${source[@]}"; do
+        file_name="${s%%::*}"
+        url="${s##*::}"
 
-    if is_function package; then
-        msg "run function: custom package..."
-        run_function_safe package
+        extract_source_single "${file_name}" "${url}"
+    done
+}
+
+function update_pkgver {
+    if ! is_function pkgver; then
+        return
     fi
 
-
-    msg "generating control info..."
-    mkdir -p "${pkgdir}/DEBIAN"
-    echo 2 > "${pkgdir}/DEBIAN/compat"
-    debian_control > "${pkgdir}/DEBIAN/control"
-
-    function debian_hooks_warpper { is_function "$1" && "$1" > "$2" && chmod +x "$2" || true; }
-    debian_hooks_warpper debian_preinst  ${pkgdir}/DEBIAN/preinst
-    debian_hooks_warpper debian_postinst ${pkgdir}/DEBIAN/postinst
-    debian_hooks_warpper debian_prerm    ${pkgdir}/DEBIAN/prerm
-    debian_hooks_warpper debian_postrm   ${pkgdir}/DEBIAN/postrm
-
-
-    msg "generating deb package..."
-    generate_deb
-    exit $?
-fi
-
-# check if all source is valid
-for s in "${source[@]}"; do
-    if ! grep "::" <<< "$s" > /dev/null; then
-        err "source must contain \"::\" to specify file name"
-        exit 1
-    fi
-done
-
-msg "cleaning \$srcdir and \$pkgdir..."
-rm -rf "${srcdir}" "${pkgdir}"
-
-mkdir -p "${srcdir}" "${pkgdir}"
-
-msg "retrieving source..."
-for s in "${source[@]}"; do
-    file_name="${s%%::*}"
-    url="${s##*::}"
-
-    retrive_source_single "${file_name}" "${url}"
-done
-
-msg "extracting source..."
-for s in "${source[@]}"; do
-    file_name="${s%%::*}"
-    url="${s##*::}"
-
-    extract_source_single "${file_name}" "${url}"
-done
-
-if is_function pkgver; then
-    msg "run function: pkgver..."
+    msg "updating pkgver..."
     newpkgver="$(run_function_safe pkgver)"
     if [[ "${newpkgver}" != "${pkgver:-}" ]] ; then
         mapfile -t bfcontent < "${buildfile}"
@@ -395,17 +370,83 @@ if is_function pkgver; then
 
         msg2 "updated version: ${newpkgver}"
     fi
+
     pkgver="${newpkgver}"
+}
+
+function generate_control {
+
+    msg "generating control info..."
+    mkdir -p "${pkgdir}/DEBIAN"
+    echo 2 > "${pkgdir}/DEBIAN/compat"
+    debian_control > "${pkgdir}/DEBIAN/control"
+
+    function debian_hooks_warpper { is_function "$1" && "$1" > "$2" && chmod +x "$2" || true; }
+    debian_hooks_warpper debian_preinst  ${pkgdir}/DEBIAN/preinst
+    debian_hooks_warpper debian_postinst ${pkgdir}/DEBIAN/postinst
+    debian_hooks_warpper debian_prerm    ${pkgdir}/DEBIAN/prerm
+    debian_hooks_warpper debian_postrm   ${pkgdir}/DEBIAN/postrm
+}
+
+function run_function {
+    if is_function "$1" ; then
+        msg "run function: $1"
+        run_function_safe "$1"
+    fi
+}
+
+
+##
+## Here start the build logic
+##
+
+while (( "$#" >= 1 )); do
+    case "$1" in
+        -F)  FAKE_PACKAGE=1 ;;
+        -OS) OVERRIDE_SOURCE=1 ;;
+        -STF) SHOW_TARGET_FILE=1 ; QUIET=1 ;;
+        -Q) QUIET=1 ;;
+        *)   err "Unkown option $1"; break ;;
+    esac
+    shift
+done
+
+source "${buildfile}"
+
+
+if (( ! FAKE_PACKAGE )) ; then
+    if (( SHOW_TARGET_FILE )) && ! is_function pkgver ; then
+        echo "$(get_deb_name)"
+        exit 0
+    fi
+
+    check_source_validation
+
+    clean_dir
+
+    retrieve_source
+
+    extract_source
+
+    update_pkgver
+
+    if (( SHOW_TARGET_FILE )) && is_function pkgver ; then
+        echo "$(get_deb_name)"
+        exit 0
+    fi
+
+    run_function build
+
+    # recursive call self to run rest task in fakeroot
+    msg "entering fakeroot environment..."
+    fakeroot -- bash -$- "${BASH_SOURCE[0]}" -F "${ARGLIST[@]}" || exit $?
+    msg "leaving fakeroot environment..."
+
+    msg "builds has done"
+else
+    run_function package
+
+    generate_control
+
+    generate_deb
 fi
-
-if is_function build; then
-    msg "run function: custom build..."
-    run_function_safe build
-fi
-
-# recursive call self to run rest task in fakeroot
-msg "entering fakeroot environment..."
-fakeroot -- bash -$- "${BASH_SOURCE[0]}" -F "${ARGLIST[@]}" || exit $?
-msg "leaving fakeroot environment..."
-
-msg "builds has done"