diff --git a/.zshrc b/.zshrc
index 33d37ec..1d4ad54 100644
--- a/.zshrc
+++ b/.zshrc
@@ -2,6 +2,7 @@
 # export PATH=$HOME/bin:/usr/local/bin:$PATH
 
 export EDITOR=vim
+export TERM="screen-256color"
 bindkey -e
 
 export JAVA_HOME=/usr/local/jdk1.8.0_131/
@@ -12,8 +13,6 @@ export PATH="$NODE_HOME/bin/:$PATH"
 
 export PATH="$PATH:$HOME/phabricator/arcanist/bin/"
 
-export TERM="screen-256color"
-
 # pyenv
 export PATH="$HOME/.pyenv/bin:$PATH"
 eval "$(pyenv init -)"
@@ -116,4 +115,3 @@ source $ZSH/oh-my-zsh.sh
 # alias zshconfig="mate ~/.zshrc"
 # alias ohmyzsh="mate ~/.oh-my-zsh"
 
-# bindkey '^m' autosuggest-accept
diff --git a/install.sh b/install.sh
index 90213cb..3ebe974 100755
--- a/install.sh
+++ b/install.sh
@@ -1,6 +1,15 @@
 #!/bin/bash
 VIMDIR=${1:-$HOME}
 
+# install ctags to solve "Exuberant ctags not found in PATH" error
+sudo apt-get install -y zsh
+chsh -s $(which zsh)
+sudo apt-get install -y exuberant-ctags
+sudo apt-get install -y vim vim-gtk tmux
+
+sh -c "$(curl -fsSL https://raw.githubusercontent.com/robbyrussell/oh-my-zsh/master/tools/install.sh)"
+
+
 echo "start install, all of your old .vimrc and .vim will be overwritten."
 echo "all your old vim settings will be mv to .vimrc.old & .vim.old"
 echo -en "Do you want to continue?[y/n]"
@@ -27,10 +36,3 @@ fi
 sudo apt-get install -y git
 git submodule init && git submodule update
 
-# install ctags to solve "Exuberant ctags not found in PATH" error
-sudo apt-get install -y exuberant-ctags
-sudo apt-get install -y vim
-sudo apt-get install -y tmux
-
-sh -c "$(curl -fsSL https://raw.githubusercontent.com/robbyrussell/oh-my-zsh/master/tools/install.sh)"
-
diff --git a/tmux/.tmux.conf b/tmux/.tmux.conf
index 40fac56..df2aac5 100644
--- a/tmux/.tmux.conf
+++ b/tmux/.tmux.conf
@@ -8,12 +8,14 @@ set -s focus-events on
 #unbind ^b   # unbind defaul prefix Control+b
 #set -g prefix 'C-\' # bind new prefix Control+a
 #bind-key 'C-\' send-prefix
-
-bind r source-file ~/.tmux.conf \; display-message "tmux config reloaded" # create new short cut to reload tmux.conf
+set -g prefix2 C-a
+bind C-a send-prefix -2
 
 set -q -g status-utf8 on
 setw -q -g utf8 on
 
+bind r source-file ~/.tmux.conf \; display-message "tmux config reloaded" # create new short cut to reload tmux.conf
+
 set -g history-limit 5000                 # boost history
 
 # ---- display ------------------------------------------------------------------------
@@ -28,19 +30,19 @@ setw -g pane-base-index 1   # make pane numbering consistent with windows
 setw -g automatic-rename on # rename window to reflect current program
 set -g renumber-windows on  # renumber windows when a window is closed
 
+set -g set-titles on
 
 # 监视窗口信息，如有内容变动，进行提示
 set -g monitor-activity on
 set -g visual-activity off
 
 # 调节窗口大小快捷键
+# bind -r 表示可以重复
 bind -r H resize-pane -L 5
 bind -r J resize-pane -D 5
 bind -r K resize-pane -U 5
 bind -r L resize-pane -R 5
 
-
-
 # move between panels using hjkl like in vim up
 #bind-key k select-pane -U
 #down
@@ -59,8 +61,10 @@ bind -r L resize-pane -R 5
 # bind -n M-Down select-pane -D
 
 # split panes using | and -
+bind \ split-window -h -c "#{pane_current_path}"
 bind | split-window -h -c "#{pane_current_path}"
 bind - split-window -v -c "#{pane_current_path}"
+bind _ split-window -v -c "#{pane_current_path}"
 unbind '"'
 unbind %