diff --git a/_scripts/sh/create_pages.sh b/_scripts/sh/create_pages.sh
index 6e152d1..12e8068 100755
--- a/_scripts/sh/create_pages.sh
+++ b/_scripts/sh/create_pages.sh
@@ -31,16 +31,16 @@ read_categories() {
   local _category=$(echo "$_yaml" | grep "^category:")
 
   if [[ ! -z "$_categories" ]]; then
-    echo "$_categories" | sed "s/categories: *//;s/\[//;s/\]//;s/, */,/g;s/\"//g;s/'//g"
+    echo "$_categories" | sed "s/categories: *//;s/\[//;s/\].*//;s/, */,/g;s/\"//g;s/'//g"
   elif [[ ! -z "_category" ]]; then
-    echo "$_category" | sed "s/category: *//;s/\[//;s/\]//;s/, */,/g;s/\"//g;s/'//g"
+    echo "$_category" | sed "s/category: *//;s/\[//;s/\].*//;s/, */,/g;s/\"//g;s/'//g"
   fi
 }
 
 
 read_tags() {
   local _yaml=$(_read_yaml $1)
-  echo "$_yaml" | grep "^tags:" | sed "s/tags: *//;s/\[//;s/\]//;s/, */,/g;s/\"//g;s/'//g"
+  echo "$_yaml" | grep "^tags:" | sed "s/tags: *//;s/\[//;s/\].*//;s/, */,/g;s/\"//g;s/'//g"
 }
 
 
@@ -63,34 +63,38 @@ init() {
 
 
 create_category() {
-  local _name=$1
-  local _filepath="categories/$(echo $_name | sed 's/ /-/g' | awk '{print tolower($0)}').html"
+  if [[ ! -z $1 ]]; then
+    local _name=$1
+    local _filepath="categories/$(echo $_name | sed 's/ /-/g' | awk '{print tolower($0)}').html"
 
-  if [[ ! -f $_filepath ]]; then
-    echo "---" > $_filepath
-    echo "layout: category" >> $_filepath
-    echo "title: $_name" >> $_filepath
-    echo "category: $_name" >> $_filepath
-    echo "---" >> $_filepath
+    if [[ ! -f $_filepath ]]; then
+      echo "---" > $_filepath
+      echo "layout: category" >> $_filepath
+      echo "title: $_name" >> $_filepath
+      echo "category: $_name" >> $_filepath
+      echo "---" >> $_filepath
 
-    ((category_count=category_count+1))
+      ((category_count=category_count+1))
+    fi
   fi
 }
 
 
 create_tag() {
-  local _name=$1
-  local _filepath="tags/$( echo $_name | sed "s/ /-/g;s/'//g" | awk '{print tolower($0)}' ).html"
+  if [[ ! -z $1 ]]; then
+    local _name=$1
+    local _filepath="tags/$( echo $_name | sed "s/ /-/g;s/'//g" | awk '{print tolower($0)}' ).html"
 
-  if [[ ! -f $_filepath ]]; then
+    if [[ ! -f $_filepath ]]; then
 
-    echo "---" > $_filepath
-    echo "layout: tag" >> $_filepath
-    echo "title: $_name" >> $_filepath
-    echo "tag: $_name" >> $_filepath
-    echo "---" >> $_filepath
+      echo "---" > $_filepath
+      echo "layout: tag" >> $_filepath
+      echo "title: $_name" >> $_filepath
+      echo "tag: $_name" >> $_filepath
+      echo "---" >> $_filepath
 
-    ((tag_count=tag_count+1))
+      ((tag_count=tag_count+1))
+    fi
   fi
 }
 
@@ -102,47 +106,45 @@ create_tag() {
 #   $2 - type specified option
 #########################################
 create_pages() {
-  if [[ $1 == '' ]]; then
-    exit 0
+  if [[ ! -z $1 ]]; then
+    # split string to array
+    IFS_BAK=$IFS
+    IFS=','
+    local _string=$1
+
+    case $2 in
+
+      $TYPE_CATEGORY)
+        for i in ${_string#,}; do
+          create_category $i
+        done
+        ;;
+
+      $TYPE_TAG)
+        for i in ${_string#,}; do
+          create_tag $i
+        done
+        ;;
+
+      *)
+        ;;
+
+      esac
+
+      IFS=$IFS_BAK
   fi
 
-  # split string to array
-  IFS_BAK=$IFS
-  IFS=','
-  local _string=$1
-
-  case $2 in
-
-    $TYPE_CATEGORY)
-      for i in ${_string#,}; do
-        create_category $i
-      done
-      ;;
-
-    $TYPE_TAG)
-      for i in ${_string#,}; do
-        create_tag $i
-      done
-      ;;
-
-    *)
-      ;;
-
-    esac
-
-    IFS=$IFS_BAK
-  }
+}
 
 
 main() {
 
   init
 
-  for _file in $(ls "_posts")
+  for _file in $(find "_posts" -type f \( -iname \*.md -o -iname \*.markdown \))
   do
-    local _path="_posts/$_file"
-    local _categories=$(read_categories "$_path")
-    local _tags=$(read_tags "$_path")
+    local _categories=$(read_categories "$_file")
+    local _tags=$(read_tags "$_file")
 
     create_pages "$_categories" $TYPE_CATEGORY
     create_pages "$_tags" $TYPE_TAG
diff --git a/_scripts/sh/dump_lastmod.sh b/_scripts/sh/dump_lastmod.sh
index 1190e60..eeed57e 100755
--- a/_scripts/sh/dump_lastmod.sh
+++ b/_scripts/sh/dump_lastmod.sh
@@ -74,14 +74,12 @@ main() {
 
   local _count=0
 
-  for _file in $(ls -r "$POST_DIR")
+  for _file in $(find ${POST_DIR} -type f \( -iname \*.md -o -iname \*.markdown \))
   do
-    _filepath="$POST_DIR/$_file"
-    _filename="${_file%.*}"     # jekyll cannot read the extension of a file, so omit it.
-    _filename=${_filename:11}   # remove the date
+    _filename=$(basename $_file | sed 's/[0-9]\([0-9]*-\)//g;s/\..*//' ) # remove date and extension
 
-    if _has_changed "$_filepath"; then
-      _dump "$_filename" "$_filepath"
+    if _has_changed "$_file"; then
+      _dump "$_filename" "$_file"
       ((_count=_count+1))
     fi