diff --git a/bashrc b/bashrc
index 9250955..f81e2f9 100755
--- a/bashrc
+++ b/bashrc
@@ -103,7 +103,7 @@ _timeformat_rfc2822="%a, %d %b %Y %T %z"
 
 alias ls="ls -hCF${_coloroption}${_timeoption}"
 # export GREP_OPTIONS=""
-alias grep="grep -n${_coloroption}"
+alias gr="grep -n${_coloroption}"
 iswindows && alias grep="grep -n"
 # alias ll="ls -l"
 # alias la="ls -A"
@@ -118,7 +118,6 @@ alias psaux="ps auxww"
 alias q=exit
 alias e3=e3em
 #alias dirs="dirs -v -l | \grep -v \$(printf '%s$' \$PWD)"
-alias dirs="dirs -v -l"
 alias po=popd
 alias pu=pushd
 alias sudo="sudo "              # use aliases through sudo
@@ -187,7 +186,8 @@ null type pacmatic && {
 null type apt-get && \
     alias aupgrade="sudo apt-get autoremove --yes && sudo apt-get update --yes && sudo apt-get upgrade --yes"
 null type port && \
-    alias pupgrade="sudo port -v selfupdate && sudo port -v upgrade outdated && sudo port -v uninstall leaves"
+    alias port="port -v"
+    alias pupgrade="sudo port -v selfupdate && { sudo port -v upgrade outdated; sudo port -v uninstall leaves; }"
 
 if iscygwin; then
     null type windate || alias windate="/c/Windows/System32/cmd.exe //c 'echo %DATE%-%TIME%'"
@@ -214,28 +214,44 @@ netwait(){
 cd(){
     if test $# -eq 0
     then
-        pushd ~/
+        pushd ~/ >/dev/null
     elif test $1 = -
     then
         local pwd="$PWD"
-        popd >/dev/null
-        pushd -n "$pwd"         # stack last dir
+        command cd $OLDPWD
+        pushd -n "$pwd" >/dev/null        # stack last dir
+    elif ! test -d "$1"
+    then
+        echo `basename ${SHELL}`: cd: "$1": No such file or directory  1>&2
+        return 1
     else
-        pushd "$@"
+        pushd "$1" >/dev/null
     fi
+    __dirs_rm_dup "$PWD"
+    echo "$PWD"
 }
 
-# pushd(){
-#     local pwd="$PWD"
-#     for l in $(\dirs -v -l | \grep "^ [0-9]\+  ${pwd}$" | cut -d " " -f 2 | tac)
-#     do
-#         echo $l
-#         test $l -eq 0 && continue
-#         popd +$l -n
-#     done
-#     command pushd "$@" >/dev/null
-# }
+__dirs_rm_dup(){
+    for d in "$@"
+    do
+        local next="$(realpath --no-symlinks "$d")"
+        for l in $(\dirs -v -l | cut -d "
+" -f 2- | \grep -x " *[0-9]\+ \+${next}" | \grep -o "^ *[0-9]\+ " | tac)
+        do
+            popd +$l -n >/dev/null
+        done
+    done
+}
 
+dh(){
+    if test $# -eq 0
+    then
+        dirs -v -l
+    else
+        local dir="$(dirs -v -l | \grep "^ *$1 \+" | sed "s/^ *[0-9]\+ *//g")"
+        cd "$dir"
+    fi
+}
 input(){
     local foo
     stty -echo
@@ -324,11 +340,11 @@ di(){
 }
 
 tb(){
-    local tb=~/.my/tb
-    mkdir -p $tb
+    local tb="$HOME/.my/tb"
+    mkdir -p "$tb"
     for file in "$@"
     do
-        mv $file $tb
+        mv -t "$tb" "$file"
     done
 }
 
diff --git a/emacs.el b/emacs.el
index 006e07c..cf8f407 100644
--- a/emacs.el
+++ b/emacs.el
@@ -852,6 +852,13 @@ drill-instructor.el"
      (require 'git-command nil t)
      (define-key ctl-x-map "g" 'git-command))
 
+(and (dllib-if-unfound
+      "https://raw.github.com/10sr/emacs-lisp/master/smart-revert.el"
+      t)
+     (require 'smart-revert nil t)
+     (smart-revert-on)
+     )
+
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;; term mode
 
@@ -1269,7 +1276,7 @@ drill-instructor.el"
             (define-key dired-mode-map (kbd "<right>") 'my-dired-scroll-down)
             (let ((file "._Icon\015"))
               (when  nil (file-readable-p file)
-                (delete-file file)))))
+                     (delete-file file)))))
 
 (and (dllib-if-unfound "https://raw.github.com/10sr/emacs-lisp/master/pack.el"
                        t)
@@ -1782,8 +1789,6 @@ when SEC is nil, stop auto save if enabled."
   ;; (redisplay t)
   (redraw-display)
   ;; (run-hooks 'window-configuration-change-hook)
-  (my-revert-buffer-if-needed)
-  ;; (revert-buffer t t)
   (keyboard-quit)
   (insert "insert me")
   (run-hooks 'after-keyboard-quit-hook))
@@ -1817,23 +1822,6 @@ this is test, does not rename files"
                (message file))
       (message "not visiting file."))))
 
-(defvar my-revert-buffer-if-needed-last-buffer nil)
-
-(defun my-revert-buffer-if-needed ()
-  ""
-  (interactive)
-  (unless (eq my-revert-buffer-if-needed-last-buffer (current-buffer))
-    (setq my-revert-buffer-if-needed-last-buffer (current-buffer))
-    (when (or (and (eq major-mode 'dired-mode)
-                   (dired-directory-changed-p default-directory))
-              (not (verify-visited-file-modtime (current-buffer))))
-      (revert-buffer t t)
-      (message "%s reverted." (buffer-name))
-      )))
-
-(add-hook 'post-command-hook ; 'window-configuration-change-hook
-          'my-revert-buffer-if-needed)
-
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;; forked from http://d.hatena.ne.jp/khiker/20100119/window_resize
 (define-key my-prefix-map (kbd "C-w") 'my-window-organizer)
diff --git a/tmux.conf b/tmux.conf
index 3a771d2..a81b049 100644
--- a/tmux.conf
+++ b/tmux.conf
@@ -20,9 +20,9 @@ set message-fg yellow
 set -g set-titles on
 
 set -g status-bg green
-set -g status-fg black
+set -g status-fg white
 if "test `hostname` = arch-aspireone" "set -g status-bg blue"
 if "test `hostname` = darwin-mba.local" "set -g status-bg yellow; set -g status-fg black"
-if "test `hostname` = newkiwi" "set -g status-bg magenta"
+if "test `hostname` = newkiwi" "set -g status-bg magenta; set -g status-fg white"
 
 if "test -f /opt/local/bin/reattach-to-user-namespace" "set-option -g default-command '/opt/local/bin/reattach-to-user-namespace bash'"