diff --git a/.gitignore b/.gitignore
index efaaeb9..07cddbe 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,11 @@
 config/mpv/watch_later/
 config/fish/fishd.*
+config/fish/fish_variables
 config/ranger/bookmarks
 config/ranger/history
 config/ranger/tagged
 config/ranger/plugins
 config/Thunar/accels.scm
+config/nvim/autoload
+config/nvim/plugged
+config/nvim/.*
diff --git a/bin/02-install-base-pkgs.fish b/bin/02-install-base-pkgs.fish
index a8f29a8..55e2c43 100755
--- a/bin/02-install-base-pkgs.fish
+++ b/bin/02-install-base-pkgs.fish
@@ -5,7 +5,7 @@ set DIR (dirname (dirname (readlink -f (status --current-filename))))
 # cli basic tooling
 pacman -S \
   base-devel \
-  vim \
+  vim neovim \
   tmux bc \
   unzip p7zip \
   openssh \
diff --git a/bin/06-config-user.fish b/bin/06-config-user.fish
index 3644539..983bb1a 100755
--- a/bin/06-config-user.fish
+++ b/bin/06-config-user.fish
@@ -40,26 +40,35 @@ function link-dotfile
   run-cmd "ln -sf $DIR/$argv ~/.$argv"
 end
 
+set -l argv
+argparse 'c/cli-only' -- $argv
+
+
 link-dotfolder config
 link-dotfolder pip
 link-dotfile tmux.conf
-link-dotfile vimrc
-link-dotfile xinitrc
-link-dotfile Xresources
-link-dotfile Xmodmap
-
-
+#link-dotfile vimrc
+rm -rf ~/.vimrc ~/.vim/coc-settings.json
+ln -s $DIR/config/nvim/init.vim ~/.vimrc
+mkdir -p ~/.vim
+ln -s $DIR/config/nvim/coc-settings.json ~/.vim/coc-settings.json
 # install tpm
 git clone https://github.com/tmux-plugins/tpm ~/.tmux/plugins/tpm
 
-# set zathura as default pdf viewer
-xdg-mime default org.pwmt.zathura.desktop application/pdf
+if [ -n "$_flag_c" ]
+  link-dotfile xinitrc
+  link-dotfile Xresources
+  link-dotfile Xmodmap
+  # set zathura as default pdf viewer
+  xdg-mime default org.pwmt.zathura.desktop application/pdf
 
-# setup mpd
-mkdir -p ~/.mpd/playlists
-systemctl --user enable mpd
-systemctl --user start mpd
 
-# install ranger plugin
-yay -S ttf-nerd-fonts-symbols
-git clone https://github.com/alexanderjeurissen/ranger_devicons ~/.config/ranger/plugins/ranger_devicons
+  # setup mpd
+  mkdir -p ~/.mpd/playlists
+  systemctl --user enable mpd
+  systemctl --user start mpd
+
+  # install ranger plugin
+  yay -S ttf-nerd-fonts-symbols
+  git clone https://github.com/alexanderjeurissen/ranger_devicons ~/.config/ranger/plugins/ranger_devicons
+end
diff --git a/coc-settings.json b/coc-settings.json
new file mode 100644
index 0000000..3a56a22
--- /dev/null
+++ b/coc-settings.json
@@ -0,0 +1,3 @@
+{
+    "npm.binPath": "yarn"
+}
diff --git a/config/fish/config.fish b/config/fish/config.fish
index f3f0de4..504511d 100644
--- a/config/fish/config.fish
+++ b/config/fish/config.fish
@@ -25,6 +25,7 @@ end
 source-file-if-exists /usr/share/autojump/autojump.fish
 source-file-if-exists /usr/local/share/autojump/autojump.fish
 append-path-if-exists ~/.local/bin
+append-path-if-exists ~/Programs/bin
 append-path-if-exists ~/.yarn/bin
 source-file-if-exists ~/.cargo/env
 append-path-if-exists /usr/local/bin
diff --git a/config/fish/fish_variables b/config/fish/fish_variables
deleted file mode 100644
index cc50299..0000000
--- a/config/fish/fish_variables
+++ /dev/null
@@ -1,36 +0,0 @@
-# This file contains fish universal variable definitions.
-# VERSION: 3.0
-SETUVAR __fish_init_2_39_8:\x1d
-SETUVAR __fish_init_2_3_0:\x1d
-SETUVAR __fish_init_3_x:\x1d
-SETUVAR __fish_initialized:3100
-SETUVAR fish_color_autosuggestion:555\x1ebrblack
-SETUVAR fish_color_cancel:\x2dr
-SETUVAR fish_color_command:005fd7
-SETUVAR fish_color_comment:990000
-SETUVAR fish_color_cwd:green
-SETUVAR fish_color_cwd_root:red
-SETUVAR fish_color_end:009900
-SETUVAR fish_color_error:ff0000
-SETUVAR fish_color_escape:00a6b2
-SETUVAR fish_color_history_current:\x2d\x2dbold
-SETUVAR fish_color_host:normal
-SETUVAR fish_color_host_remote:yellow
-SETUVAR fish_color_match:\x2d\x2dbackground\x3dbrblue
-SETUVAR fish_color_normal:normal
-SETUVAR fish_color_operator:00a6b2
-SETUVAR fish_color_param:00afff
-SETUVAR fish_color_quote:999900
-SETUVAR fish_color_redirection:00afff
-SETUVAR fish_color_search_match:bryellow\x1e\x2d\x2dbackground\x3dbrblack
-SETUVAR fish_color_selection:white\x1e\x2d\x2dbold\x1e\x2d\x2dbackground\x3dbrblack
-SETUVAR fish_color_status:red
-SETUVAR fish_color_user:brgreen
-SETUVAR fish_color_valid_path:\x2d\x2dunderline
-SETUVAR fish_greeting:Welcome\x20to\x20fish\x2c\x20the\x20friendly\x20interactive\x20shell
-SETUVAR fish_key_bindings:fish_default_key_bindings
-SETUVAR fish_pager_color_completion:\x1d
-SETUVAR fish_pager_color_description:B3A06D\x1eyellow
-SETUVAR fish_pager_color_prefix:white\x1e\x2d\x2dbold\x1e\x2d\x2dunderline
-SETUVAR fish_pager_color_progress:brwhite\x1e\x2d\x2dbackground\x3dcyan
-SETUVAR fish_user_paths:/home/klesh/\x2econfig/nvm/10\x2e20\x2e1/bin
diff --git a/config/fish/functions/nvm.fish b/config/fish/functions/nvm.fish
index d0d40d7..0eda488 100644
--- a/config/fish/functions/nvm.fish
+++ b/config/fish/functions/nvm.fish
@@ -169,7 +169,7 @@ function _nvm_use
                         set arch armv6l
                     case armv7 armv7l
                         set arch armv7l
-                    case armv8 armv8l
+                    case armv8 armv8l aarch64
                         set arch arm64
                     case \*
                         set arch x86
diff --git a/config/nvim/coc-settings.json b/config/nvim/coc-settings.json
new file mode 100644
index 0000000..48e1fa0
--- /dev/null
+++ b/config/nvim/coc-settings.json
@@ -0,0 +1,7 @@
+{
+    "npm.binPath": "yarn",
+    "python.linting.enable": true,
+    "python.linting.flake8Enabled": true,
+    "explorer.icon.enableNerdfont": true,
+    "explorer.width": 30
+}
diff --git a/config/nvim/init.vim b/config/nvim/init.vim
new file mode 100644
index 0000000..a6772bd
--- /dev/null
+++ b/config/nvim/init.vim
@@ -0,0 +1,138 @@
+" basic settings
+set ts=4
+set sw=4
+set cc=120
+set expandtab
+set nu
+set hidden
+set list
+set autoindent
+set confirm
+set noundofile
+set nobackup
+set nowritebackup
+set hlsearch
+set noswapfile
+set ignorecase
+set smarttab
+set smartindent
+set cursorline
+set incsearch
+set signcolumn=yes
+set laststatus=2
+set fillchars=vert:\ ,fold:-
+set clipboard+=unnamedplus
+filetype plugin indent on
+syntax on
+au! BufWritePost $MYVIMRC source %
+
+cnoremap <C-a> <Home>
+cnoremap <C-e> <End>
+cnoremap <C-f> <Right>
+cnoremap <C-b> <Left>
+cnoremap <C-d> <Delete>
+cnoremap <C-n> <Down>
+cnoremap <C-p> <Up>
+
+inoremap <C-a> <Home>
+inoremap <C-e> <End>
+inoremap <C-f> <Right>
+inoremap <C-b> <Left>
+inoremap <C-d> <Delete>
+inoremap <C-n> <Down>
+inoremap <C-p> <Up>
+
+noremap <C-a> <Home>
+noremap <C-e> <End>
+noremap <C-f> <Right>
+noremap <C-b> <Left>
+
+vnoremap <leader>p "_dP
+nnoremap <leader>q :qall<CR>
+
+nnoremap <leader>1 :b1<CR>
+nnoremap <leader>2 :b2<CR>
+nnoremap <leader>3 :b3<CR>
+nnoremap <leader>4 :b4<CR>
+nnoremap <leader>5 :b5<CR>
+nnoremap <leader>w :w<CR>
+nnoremap <leader><Esc> :noh<return><esc>
+
+inoremap <C-w> <esc><C-w>
+
+
+" trailing spaces
+highlight ExtraWhitespace ctermbg=red guibg=red
+au ColorScheme * highlight ExtraWhitespace ctermbg=red guibg=red
+au Syntax * match ExtraWhitespace /\s\+$/
+nnoremap <leader>es :%s/\s\+$//g<CR>
+
+" auto install vim-plug
+if has('nvim')
+    let vim_plug_path = expand("~/.config/nvim/autoload/plug.vim")
+else
+    let vim_plug_path = expand("~/.vim/autoload/plug.vim")
+endif
+let vim_plug_just_installed = 0
+if !filereadable(vim_plug_path)
+    echo "Installing vim-plug..."
+    :exe "!curl -fLo " . vim_plug_path . " --create-dirs https://gitee.com/klesh/vim-plug/raw/master/plug.vim"
+    let vim_plug_just_installed = 1
+    echo "vim-plug installed"
+endif
+
+call plug#begin()
+Plug 'editorconfig/editorconfig-vim'
+Plug 'tpope/vim-surround'
+Plug 'jiangmiao/auto-pairs'
+Plug 'neoclide/coc.nvim', {'branch': 'release'}
+Plug 'neoclide/coc-json', {'do': 'yarn install --frozen-lockfile'}
+Plug 'iamcco/coc-vimlsp', {'do': 'yarn install --frozen-lockfile'}
+Plug 'neoclide/coc-python', {'do': 'yarn install --frozen-lockfile'}
+Plug 'weirongxu/coc-explorer', {'do': 'yarn install --frozen-lockfile'}
+Plug 'liuchengxu/eleline.vim'
+Plug 'tpope/vim-fugitive'                                         " git 功能
+Plug 'scrooloose/nerdcommenter'
+Plug 'ctrlpvim/ctrlp.vim'
+Plug 'mhinz/vim-grepper', { 'on': ['Grepper', '<plug>(GrepperOperator)'] }
+Plug 'morhetz/gruvbox'
+call plug#end()
+
+
+" ==== coc configuration ====
+nmap <silent> gd <Plug>(coc-definition)
+nmap <silent> gy <Plug>(coc-type-definition)
+nmap <silent> gi <Plug>(coc-implementation)
+nmap <silent> gr <Plug>(coc-references)
+
+xmap <silent> <leader>fs <Plug>(coc-format-selected)
+nmap <silent> <leader>fs <Plug>(coc-format-selected)
+nmap <silent> <leader>fb <Plug>(coc-format)
+nmap <silent> <leader>rn <Plug>(coc-rename)
+nmap <silent> <leader>ne <Plug>(coc-diagnostic-next-error)
+nmap <silent> <leader>pe <Plug>(coc-diagnostic-prev-error)
+nmap <silent> <leader>fe :CocCommand explorer --toggle<CR>
+nmap <silent> <leader>if :CocInfo<CR>
+nmap <silent> <leader>cl :CocList<CR>
+nmap <silent> <leader>sd :call CocAction('doHover')<CR>
+nmap <silent> <leader>ss :syntax sync fromstart<CR>
+nmap <silent> <leader>ol <Plug>(coc-openlink)
+nnoremap <leader>sg :Grepper -tool git<CR>
+nnoremap <leader>sc :Grepper -tool grep<CR>
+
+
+" ==== fugitive configuration ====
+nnoremap <leader>gs :Gstatus<CR>
+nnoremap <leader>gc :Gcommit<CR>
+nnoremap <leader>gp :Gpush<CR>
+nnoremap <leader>gg :Gpull<CR>
+nnoremap <leader>gd :Gdiff<CR>
+
+" ==== ctrlp configuration ====
+let g:ctrlp_user_command = ['.git', 'git ls-files -co --exclude-standard']
+
+
+" ==== gruvbox configuration ====
+color gruvbox
+set background=dark
+highlight Normal ctermbg=None
diff --git a/config/zathura/zathurarc b/config/zathura/zathurarc
index 53e572e..4c56c8a 100644
--- a/config/zathura/zathurarc
+++ b/config/zathura/zathurarc
@@ -2,3 +2,5 @@ unmap q
 set recolor true
 set recolor-darkcolor "#dcdccc"
 set recolor-lightcolor "#1f1f1f"
+map i set recolor false
+map I set recolor true
diff --git a/tex.vimrc b/tex.vimrc
new file mode 100644
index 0000000..ef37679
--- /dev/null
+++ b/tex.vimrc
@@ -0,0 +1,102 @@
+function! MathAndLiquid()
+  "" Define certain regions
+  " Block math. Look for "$$[anything]$$"
+  syn region math start=/\$\$/ end=/\$\$/
+  " inline math. Look for "$[not $][anything]$"
+  syn match math_block '\$[^$].\{-}\$'
+
+  " Liquid single line. Look for "{%[anything]%}"
+  syn match liquid '{%.*%}'
+  " Liquid multiline. Look for "{%[anything]%}[anything]{%[anything]%}"
+  syn region highlight_block start='{% highlight .*%}' end='{%.*%}'
+  " Fenced code blocks, used in GitHub Flavored Markdown (GFM)
+  syn region highlight_block start='```' end='```'
+
+  "" Actually highlight those regions.
+  hi link math Statement
+  hi link liquid Statement
+  hi link highlight_block Function
+  hi link math_block Function
+endfunction
+
+" Call everytime we open a Markdown file
+"autocmd BufRead,BufNewFile,BufEnter *.md,*.markdown call MathAndLiquid()
+
+" \vm 2 4\<Tab>
+" \begin{vmatrix}
+" <++> & <++> & <++> & <++> \\
+" <++> & <++> & <++> & <++ > \\
+" \end{vmatrix}<++>
+"
+function! Tex()
+  let mark = '\'
+  let sepr = ' '
+  let tags = {'vm': 'vmatrix', 'bm': 'bmatrix', 'mt': 'matrix', 'cs': 'cases', 'ad': 'aligned', 'al': 'align', 'ar': 'array'}
+  let text = getline('.')
+  let end = col('.')
+  let start = strridx(text, mark, end)
+  if start > -1
+    let params = strpart(text, start+1, end - start - 1)
+    let params = split(params, sepr)
+    let abbr = params[0]
+    if strlen(abbr) == 0 || !has_key(tags, abbr)
+      return
+    endif
+    let rc = params[1]
+    if !(rc>0)
+      return
+    endif
+    if len(params)>2
+      let cc = params[2]
+      if !(cc>0)
+        return
+      endif
+    else
+      let cc = 1
+    end
+
+    let prefix = repeat(' ', start)
+
+    let thecols = []
+    let i = 0
+    while i < cc
+      call add(thecols, '<++>')
+      let i += 1
+    endwhile
+    let columnsText = prefix . '  '. join(thecols, ' & ') . ' \\'
+
+    let lines = []
+    let i = 0
+    while i < rc
+      call add(lines, columnsText)
+      let i += 1
+    endwhile
+    call add(lines, prefix . '\end{' . tags[abbr] . '}<++>')
+
+    let leftPart = strpart(text, 0, start)
+    let rightPart = strpart(text, end)
+    if strlen(rightPart) > 0
+      call add(lines, prefix . rightPart)
+    endif
+    call setline(line('.'), leftPart . '\begin{' . tags[abbr] . '}')
+    call append(line('.'), lines)
+    "call append(line('.'), lines)
+  endif
+endfunction
+
+" autocmd FileType markdown
+inoremap <Bslash><Tab> <Esc>:call Tex()<Esc>a
+" Navigating with guides
+inoremap <leader><Tab> <Esc>/<++><Enter>"_c4l
+vnoremap <leader><Tab> <Esc>/<++><Enter>"_c4l
+map <leader><Tab> <Esc>/<++><Enter>"_c4l
+nmap <C-_>   <Plug>NERDCommenterToggle
+vmap <C-_>   <Plug>NERDCommenterToggle<CR>gv
+
+" Markdown setup
+autocmd FileType markdown inoremap \cs<Tab> \begin{cases}\end{cases}<++><Esc>F\i
+autocmd FileType markdown inoremap \fr<Tab> \frac{<++>}{<++>}<++><Esc>F\i
+autocmd FileType markdown inoremap `<Tab> `$$`<++><Esc>F$i
+autocmd FileType markdown inoremap $<Tab> $$<Enter>$$<Enter><++><Esc>kO
+autocmd FileType markdown inoremap \{ \{\}<++><Esc>F{a
+autocmd FileType markdown vnoremap <leader>b c__<C-r>"__<Esc>
diff --git a/tmux.conf b/tmux.conf
index b4671bf..ca70a2c 100644
--- a/tmux.conf
+++ b/tmux.conf
@@ -1,6 +1,7 @@
 ############################
 # general
 ############################
+set -g set-clipboard on
 set -g default-terminal "xterm-256color"
 set -s escape-time 0
 set -g base-index 1
@@ -65,7 +66,7 @@ set -g @yank_action 'copy-pipe'
 # tmux source ~/.tmux.conf
 # prefix + I
 # plugins dir: ~/.tmux/plugins/
-set -g @plugin 'tmux-plugins/tmux-yank'
+#set -g @plugin 'tmux-plugins/tmux-yank'
 set -g @plugin 'kristijanhusak/tmux-simple-git-status'
 set -g @plugin 'klesh/tmux-open'
 set -g @plugin 'tmux-plugins/tmux-copycat'
diff --git a/ubuntu/install-base.sh b/ubuntu/install-base.sh
index c3fc17a..1d22c43 100755
--- a/ubuntu/install-base.sh
+++ b/ubuntu/install-base.sh
@@ -1,5 +1,6 @@
 #!/bin/bash
 
+set -e
 sudo apt update
-sudo apt upgrade --fix-missing
-sudo apt install build-essential automake pkg-config software-properties-common curl -y
+sudo apt upgrade --fix-missing -y -q
+sudo apt install build-essential automake pkg-config software-properties-common curl -y -q
diff --git a/ubuntu/install-fish.sh b/ubuntu/install-fish.sh
index 5375321..9a89a87 100755
--- a/ubuntu/install-fish.sh
+++ b/ubuntu/install-fish.sh
@@ -1,3 +1,6 @@
+#!/bin/bash
+
+set -e
 sudo add-apt-repository ppa:fish-shell/release-3 -y
 sudo apt update
 sudo apt install fish -y
diff --git a/ubuntu/install-sources.sh b/ubuntu/install-sources.sh
index 3c40b89..30235e9 100755
--- a/ubuntu/install-sources.sh
+++ b/ubuntu/install-sources.sh
@@ -1,13 +1,13 @@
 #!/bin/bash
 
+set -e
+
+DIR=$(dirname "${BASH_SOURCE[0]}")
+ARCH=$(lscpu | head -n 1 | awk '{print $2}')
 if [ ! -e /etc/apt/sources.bak ]; then
   sudo mv /etc/apt/sources.list /etc/apt/sources.bak
 
   CURRENT_CODENAME=$(lsb_release -c | cut -f2)
-  SOURCE_CODENAME=$(head -n 1 $DIR/sources.list | cut -d' ' -f3)
-  if [ "$CURRENT_CODENAME" != "$SOURCE_CODENAME" ]; then
-    sudo bash -c "cat $DIR/sources.list | sed s/$SOURCE_CODENAME/$CURRENT_CODENAME/g > /etc/apt/sources.list"
-  else
-    sudo cp $DIR/sources.list /etc/apt/
-  fi
+  SOURCE_CODENAME=$(head -n 1 $DIR/sources.$ARCH.list | cut -d' ' -f3)
+  sudo bash -c "sed s/$SOURCE_CODENAME/$CURRENT_CODENAME/g $DIR/sources.$ARCH.list > /etc/apt/sources.list"
 fi
diff --git a/ubuntu/install-tmux.sh b/ubuntu/install-tmux.sh
index d34215a..e576ceb 100755
--- a/ubuntu/install-tmux.sh
+++ b/ubuntu/install-tmux.sh
@@ -1,14 +1,18 @@
 #!/bin/bash
 
+set -e
+
 sudo apt install libevent-dev libncurses5-dev -y
 
 TMUX_VER=3.1b
-curl -L https://github.com/tmux/tmux/releases/download/$TMUX_VER/tmux-$TMUX_VER.tar.gz -o /tmp/tmux.tar.gz
-cd /tmp/
-tar zxvf tmux.tar.gz
-cd tmux-$TMUX_VER
+#curl -L https://github.com/tmux/tmux/releases/download/$TMUX_VER/tmux-$TMUX_VER.tar.gz -o /tmp/tmux.tar.gz
+[ ! -f /tmp/tmux.tar.gz ] && curl -L https://gitee.com/klesh/tmux/repository/archive/$TMUX_VER?format=tar.gz -o /tmp/tmux.tar.gz
+rm -rf /tmp/tmux
+mkdir -p /tmp/tmux
+tar zxvf /tmp/tmux.tar.gz -C /tmp/tmux --strip 1
+pushd /tmp/tmux
+[ -f autogen.sh ] && sh autogen.sh
 ./configure && make
 sudo make install
-cd
-rm -rf /tmp/tmux-$TMUX_VER
-rm -rf /tmp/tmux.tar.gz
+popd
+rm -rf /tmp/tmux*
diff --git a/ubuntu/install-vim.sh b/ubuntu/install-vim.sh
index 916b530..e891025 100755
--- a/ubuntu/install-vim.sh
+++ b/ubuntu/install-vim.sh
@@ -1,5 +1,9 @@
 #!/bin/bash
 
+set -e
+
 sudo add-apt-repository ppa:jonathonf/vim -y
-sudo apt update
+sudo add-apt-repository ppa:neovim-ppa/stable -y
+#sudo apt update
 sudo apt install -y vim
+sudo apt install -y neovim
diff --git a/ubuntu/setup.sh b/ubuntu/setup.sh
index b42f40f..f8bf637 100755
--- a/ubuntu/setup.sh
+++ b/ubuntu/setup.sh
@@ -1,9 +1,16 @@
 #!/bin/bash
 
+set -e
+
 DIR=$(dirname "${BASH_SOURCE[0]}")
 
+echo '===================    Replace sources.list       ===================='
 $DIR/install-sources.sh
+echo '===================    Installing basic packages  ===================='
 $DIR/install-base.sh
+echo '===================    Installing fish shell      ===================='
 $DIR/install-fish.sh
+echo '===================    Installing vim             ===================='
 $DIR/install-vim.sh
+echo '===================    Installing tmux            ===================='
 $DIR/install-tmux.sh
diff --git a/ubuntu/sources.aarch64.list b/ubuntu/sources.aarch64.list
new file mode 100644
index 0000000..a6d71b8
--- /dev/null
+++ b/ubuntu/sources.aarch64.list
@@ -0,0 +1,16 @@
+
+deb http://mirrors.aliyun.com/ubuntu-ports/ xenial main
+deb-src http://mirrors.aliyun.com/ubuntu-ports/ xenial main
+
+deb http://mirrors.aliyun.com/ubuntu-ports/ xenial-updates main
+deb-src http://mirrors.aliyun.com/ubuntu-ports/ xenial-updates main
+
+deb http://mirrors.aliyun.com/ubuntu-ports/ xenial universe
+deb-src http://mirrors.aliyun.com/ubuntu-ports/ xenial universe
+deb http://mirrors.aliyun.com/ubuntu-ports/ xenial-updates universe
+deb-src http://mirrors.aliyun.com/ubuntu-ports/ xenial-updates universe
+
+deb http://mirrors.aliyun.com/ubuntu-ports/ xenial-security main
+deb-src http://mirrors.aliyun.com/ubuntu-ports/ xenial-security main
+deb http://mirrors.aliyun.com/ubuntu-ports/ xenial-security universe
+deb-src http://mirrors.aliyun.com/ubuntu-ports/ xenial-security universe
diff --git a/ubuntu/sources.list b/ubuntu/sources.x86_64.list
similarity index 100%
rename from ubuntu/sources.list
rename to ubuntu/sources.x86_64.list
diff --git a/vimrc b/vimrc
index 2417cfd..484607a 100644
--- a/vimrc
+++ b/vimrc
@@ -37,129 +37,140 @@ else
   source $VIMRUNTIME/delmenu.vim
   source $VIMRUNTIME/menu.vim
 endif
-Plug 'terryma/vim-multiple-cursors'
-Plug 'jiangmiao/auto-pairs'
-"Plug 'scrooloose/syntastic'
-"Plug 'w0rp/ale'
-Plug 'scrooloose/nerdtree'
-Plug 'alvan/vim-closetag'
-"Plug 'AndrewRadev/tagalong.vim'
-Plug 'tpope/vim-repeat'
-Plug 'tpope/vim-fugitive'                                         " git 功能
-Plug 'tpope/vim-surround'
-"Plug 'vim-airline/vim-airline'
-"Plug 'vim-airline/vim-airline-themes'
-Plug 'scrooloose/nerdcommenter'
-Plug 'editorconfig/editorconfig-vim'
+
+" searching and formatting
 Plug 'mhinz/vim-grepper', { 'on': ['Grepper', '<plug>(GrepperOperator)'] }
 Plug 'ctrlpvim/ctrlp.vim'
+Plug 'godlygeek/tabular' " align text by specified pattern   :Tabularize /<pattern>
+Plug 'editorconfig/editorconfig-vim'
+Plug 'tpope/vim-surround'
+Plug 'tpope/vim-repeat'
+Plug 'alvan/vim-closetag'
+Plug 'jiangmiao/auto-pairs'
+
+" ide like
+Plug 'neoclide/coc.nvim', {'branch': 'release'}
+Plug 'neoclide/coc-json', {'do': 'yarn install --frozen-lockfile'}
+Plug 'neoclide/coc-python', {'do': 'yarn install --frozen-lockfile'}
+Plug 'weirongxu/coc-explorer', {'do': 'yarn install --frozen-lockfile'}
+Plug 'scrooloose/nerdcommenter'
+Plug 'tpope/vim-fugitive'                                         " git 功能
+"Plug 'scrooloose/nerdtree'
+"Plug 'mgedmin/coverage-highlight.vim'
+"Plug 'klesh/vim-fakeclip'
+
+" color themes
+Plug 'morhetz/gruvbox'
+
+" syntax
+Plug 'peitalin/vim-jsx-typescript'
+Plug 'pangloss/vim-javascript'
 Plug 'lunaru/vim-less'
 Plug 'posva/vim-vue'
 Plug 'othree/html5.vim'
-Plug 'mtscout6/syntastic-local-eslint.vim'
-Plug 'pangloss/vim-javascript'
-Plug 'klesh/vim-fakeclip'
 Plug 'dag/vim-fish'
-Plug 'digitaltoad/vim-pug'
-"Plug 'ludovicchabant/vim-gutentags'
-Plug 'godlygeek/tabular'
+"Plug 'vim-python/python-syntax'
 Plug 'plasticboy/vim-markdown'
-Plug 'triglav/vim-visual-increment'
-Plug 'jvirtanen/vim-octave'
-Plug 'vim-python/python-syntax'
-Plug 'mgedmin/coverage-highlight.vim'
-Plug 'neoclide/coc.nvim', {'branch': 'release'}
-Plug 'neoclide/coc-python', {'do': 'yarn install --frozen-lockfile'}
-Plug 'neoclide/coc-tsserver', {'do': 'yarn install --frozen-lockfile'}
-Plug 'morhetz/gruvbox'
-Plug 'peitalin/vim-jsx-typescript'
+"Plug 'digitaltoad/vim-pug'
+
+" statusline
+Plug 'liuchengxu/eleline.vim'
 call plug#end()
 
-" coc configuration, may need to run `yarn` in ~/.vim/coc-python folder
-" $ pip install --user python-language-server jedi rope
-
-
-
-" Remap keys for gotos
+" ==== coc configuration ====
 nmap <silent> gd <Plug>(coc-definition)
 nmap <silent> gy <Plug>(coc-type-definition)
 nmap <silent> gi <Plug>(coc-implementation)
 nmap <silent> gr <Plug>(coc-references)
 
+xmap <silent> <leader>fs <Plug>(coc-format-selected)
+nmap <silent> <leader>fs <Plug>(coc-format-selected)
+nmap <silent> <leader>fb <Plug>(coc-format)
+nmap <silent> <leader>rn <Plug>(coc-rename)
+nmap <silent> <leader>ne <Plug>(coc-diagnostic-next-error)
+nmap <silent> <leader>pe <Plug>(coc-diagnostic-prev-error)
+nmap <silent> <leader>fe :CocCommand explorer --toggle<CR>
+nmap <silent> <leader>if :CocInfo<CR>
+nmap <silent> <leader>cl :CocList<CR>
+nmap <silent> <leader>ol <Plug>(coc-openlink)
+
 " Highlight symbol under cursor on CursorHold
 autocmd CursorHold * silent call CocActionAsync('highlight')
 
+
+
 " Use K to show documentation in preview window
-nnoremap <silent> K :call <SID>show_documentation()<CR>
-
-" Remap for rename current word
-nmap <leader>rn <Plug>(coc-rename)
-
-" Remap for format selected region
-xmap <leader>f  <Plug>(coc-format-selected)
-nmap <leader>f  <Plug>(coc-format-selected)
-
 function! s:show_documentation()
+  " s:f makes function f local, use <SID>f() to call it, ! replaces existing
+  " function quitely
   if (index(['vim','help'], &filetype) >= 0)
     execute 'h '.expand('<cword>')
   else
     call CocAction('doHover')
   endif
 endfunction
+nnoremap <silent> K :call <SID>show_documentation()<CR>
 
 
-" markdown
+" ==== markdown configuration ====
 let g:vim_markdown_folding_disabled = 1
 let g:vim_markdown_math = 1
 
-" nerdtree
+
+" ==== nerdtree configuration ====
 let NERDTreeDirArrowExpandable = "+"
 let NERDTreeDirArrowCollapsible = "-"
+let NERDTreeIgnore = ['\.pyc$', '__pycache__']
 
-" python
+
+" ==== python configuration ====
 let g:python_highlight_all = 1
 
-" airline
-let g:airline_theme='bubblegum'
-let g:airline_left_sep = ''
-let g:airline_right_sep = ''
-"let g:airline_left_sep = ' '
-"let g:airline_right_sep = ' '
-let g:airline_symbols#crypt = '🔒'
-let g:airline_symbols#linenr = '¶'
-let g:airline_symbols#maxlinenr = '☰'
-let g:airline_symbols#branch = ''
-"let g:airline_symbols#paste = 'ρ'
-let g:airline_symbols#paste = 'Þ'
-"let g:airline_symbols#paste = '∥'
-"let g:airline_symbols#spell = 'Ꞩ'
-"let g:airline_symbols#notexists = '∄'
-"let g:airline_symbols#whitespace = 'Ξ'
-"
-"let g:airline_theme='luna'
 
-" CtrlP
+" ==== ctrlp configuration ====
 let g:ctrlp_user_command = ['.git', 'git ls-files -co --exclude-standard']
-"let g:ctrlp_map = '<Space><Space>'
-" NERDTree
-let NERDTreeIgnore = ['\.pyc$', '__pycache__']
-" syntastic
-" let g:syntastic_javascript_checkers = ['eslint']
-"let g:ale_python_pylint_change_directory = 0
-let g:ale_linters = {
-      \  'python': ['flake8']
-      \}
 
 
-
-" vue-vim
-" 解决跳到尾部时语法高亮不正常的问题
+" ==== vue configuration ====
+" syntax highlighting not working correctly occasionally for vue
 autocmd FileType vue syntax sync fromstart
-" 利用现有的插件对语法进行高亮
-"autocmd BufRead,BufNewFile *.vue setlocal filetype=vue.html5.javascript.less
 autocmd BufRead,BufNewFile *.vue setlocal filetype=vue
 
-" vim
+
+" ==== closetag configuration ====
+" Disables auto-close if not in a "valid" region (based on filetype)
+let g:closetag_regions = {
+    \ 'typescript.tsx': 'jsxRegion,tsxRegion',
+    \ 'javascript.jsx': 'jsxRegion',
+    \ }
+let g:closetag_shortcut = '>'
+let g:closetag_filenames = "*.html,*.xhtml,*.phtml,*.js,*.vue,*.tsx"
+
+
+" ==== nerdcommenter configuration ====
+" fixing vue commenting problem
+fu! NERDCommenter_before()
+  if &ft == 'vue'
+    let b:isvue = 1
+    let stack = synstack(line('.'), col('.'))
+    if len(stack) > 0
+      let syn = synIDattr((stack)[0], 'name')
+      if len(syn) > 0
+        let syn = tolower(syn)
+        exe 'setf '.syn
+      endif
+    endif
+  endif
+endfu
+fu! NERDCommenter_after()
+  if exists('b:isvue') && b:isvue
+    setf vue
+    let b:isvue = 0
+  endif
+endfu
+
+
+" ==== general configuration ====
 set ts=4
 set sw=4
 set listchars=eol:$,tab:->,extends:>,precedes:<,space:.,
@@ -179,77 +190,52 @@ set noshowmatch
 set laststatus=2
 let html_no_rendering=1
 set fillchars=vert:\ ,fold:-
-"highlight VertSplit guibg=Orange guifg=Black ctermbg=None ctermfg=033
+set showcmd
 hi StatusLine cterm=NONE
 
-" keybindings
-" 从系统剪贴板复制/粘贴
-"inoremap <C-p> <ESC>"+pa
-"nnoremap <C-p> "+p
-"vnoremap <C-p> "+p
-"vnoremap <C-y> "+y
-vmap <C-y> <Plug>(fakeclip-y)
-inoremap <C-S-s> <ESC>:<C-u>:w<CR>a
-nnoremap <C-S-s> :<C-u>:w<CR>
-
-"nnoremap <Space><Space> :CtrlP<CR>
-nnoremap <Space>n :NERDTreeToggle<CR>
-nnoremap <Space>g :Grepper -tool git<CR>
-
-nnoremap <Esc><Esc> :noh<return><esc>
-nnoremap <Space>o :only<CR>
-nnoremap <Space>w <C-w><C-w>
-nnoremap <Space>q :<C-u>qall<CR>
-vnoremap <Space>p "_dP
-nnoremap <Space>e :<C-u>%s/\s\+$//g<CR>
-nnoremap <Space>s :<C-u>syntax sync fromstart<CR>
-nnoremap <Space>c :<C-u>:set cursorcolumn!<CR>
-
-nnoremap <Space>h <C-w>h
-nnoremap <Space>j <C-w>j
-nnoremap <Space>k <C-w>k
-nnoremap <Space>l <C-w>l
-nnoremap <Space>m :vertical resize +5<CR>
-nnoremap <Space>, :vertical resize -5<CR>
-nnoremap <Space>. :resize +5<CR>
-nnoremap <Space>/ :resize -5<CR>
-nnoremap <Space>d :vs<CR>
-nnoremap <Space>[ :lprev<CR>
-nnoremap <Space>] :lnext<CR>
-
-vnoremap <silent> <leader>m c<c-r>=trim(@") . '=' . trim(system('math ' . shellescape(@")))<cr><esc>
-
 " 行尾空格高亮
 highlight ExtraWhitespace ctermbg=red guibg=red
 au ColorScheme * highlight ExtraWhitespace ctermbg=red guibg=red
 au Syntax * match ExtraWhitespace /\s\+$/
 
-" iterm2 插入模式时backspace不works
-set backspace=indent,eol,start
+" theme
+try
+    color gruvbox
+catch
+    color delek
+endtry
+set background=dark
+highlight Normal ctermbg=None
 
-function! ReadClipboardWsl()
-  let text = system('powershell.exe -Command Get-Clipboard')
-  let text = substitute(text, "\r\n", '', 'g')
-  return text
-endfunction
+" ==== keybinding configuration ====
+"vmap <C-y> <Plug>(fakeclip-y)
+inoremap <C-S-s> <ESC>:<C-u>:w<CR>a
+nnoremap <C-S-s> :<C-u>:w<CR>
 
-function! TabNewFromClipboard()
-  exec ':tabnew ' . ReadClipboardWsl()
-endfunction
-
-function! Jsonpp()
-  "exec ':%!python -m json.tool'
-  exec ':%!json_pp'
-endfunction
-
-function! DecodeHtml()
-  exec ':%s/<pre>/```\r/g'
-  exec ':%s/<\/pre>/\r```/g'
-  exec ':%s/&lt;/</g'
-  exec ':%s/&gt;/>/g'
-  exec ':%s/&amp;/\&/g'
-endfunction
+vnoremap <leader>p "_dP
+nnoremap <leader><Esc> :noh<return><esc>
+nnoremap <leader>nt :NERDTreeToggle<CR>
+nnoremap <leader>fs :Grepper -tool git<CR>
+nnoremap <leader>o :only<CR>
+nnoremap <leader>q :<C-u>qall<CR>
+nnoremap <leader>e :<C-u>%s/\s\+$//g<CR>
+nnoremap <leader>s :<C-u>syntax sync fromstart<CR>
+nnoremap <leader>c :<C-u>:set cursorcolumn!<CR>
+nnoremap <leader>gs :<C-u>:Gstatus<CR>
+nnoremap <leader>gc :<C-u>:Gcommit<CR>
+nnoremap <leader>gp :<C-u>:Gpush<CR>
+nnoremap <leader>gg :<C-u>:Gpull<CR>
+nnoremap <leader>gd :<C-u>:Gdiff<CR>
+autocmd FileType json nnoremap <leader>f %!json_pp<Cr>
 
+"nnoremap <leader>m :vertical resize +5<CR>
+"nnoremap <leader>, :vertical resize -5<CR>
+"nnoremap <leader>. :resize +5<CR>
+"nnoremap <leader>/ :resize -5<CR>
+"nnoremap <leader>d :vs<CR>
+"nnoremap <leader>[ :lprev<CR>
+"nnoremap <leader>] :lnext<CR>
+"vnoremap <silent> <leader>m c<c-r>=trim(@") . '=' . trim(system('math ' . shellescape(@")))<cr><esc>
 cnoremap <C-a> <Home>
 cnoremap <C-e> <End>
 cnoremap <C-f> <Right>
@@ -270,113 +256,19 @@ noremap <C-a> <Home>
 noremap <C-e> <End>
 noremap <C-f> <Right>
 noremap <C-b> <Left>
-noremap <C-n> <Down>
-noremap <C-p> <Up>
 
-function! MathAndLiquid()
-  "" Define certain regions
-  " Block math. Look for "$$[anything]$$"
-  syn region math start=/\$\$/ end=/\$\$/
-  " inline math. Look for "$[not $][anything]$"
-  syn match math_block '\$[^$].\{-}\$'
+" iterm2 插入模式时backspace不works
+set backspace=indent,eol,start
 
-  " Liquid single line. Look for "{%[anything]%}"
-  syn match liquid '{%.*%}'
-  " Liquid multiline. Look for "{%[anything]%}[anything]{%[anything]%}"
-  syn region highlight_block start='{% highlight .*%}' end='{%.*%}'
-  " Fenced code blocks, used in GitHub Flavored Markdown (GFM)
-  syn region highlight_block start='```' end='```'
 
-  "" Actually highlight those regions.
-  hi link math Statement
-  hi link liquid Statement
-  hi link highlight_block Function
-  hi link math_block Function
+function! DecodeHtml()
+  exec ':%s/<pre>/```\r/g'
+  exec ':%s/<\/pre>/\r```/g'
+  exec ':%s/&lt;/</g'
+  exec ':%s/&gt;/>/g'
+  exec ':%s/&amp;/\&/g'
 endfunction
 
-" Call everytime we open a Markdown file
-"autocmd BufRead,BufNewFile,BufEnter *.md,*.markdown call MathAndLiquid()
-
-" \vm 2 4\<Tab>
-" \begin{vmatrix}
-" <++> & <++> & <++> & <++> \\
-" <++> & <++> & <++> & <++ > \\
-" \end{vmatrix}<++>
-"
-function! Tex()
-  let mark = '\'
-  let sepr = ' '
-  let tags = {'vm': 'vmatrix', 'bm': 'bmatrix', 'mt': 'matrix', 'cs': 'cases', 'ad': 'aligned', 'al': 'align', 'ar': 'array'}
-  let text = getline('.')
-  let end = col('.')
-  let start = strridx(text, mark, end)
-  if start > -1
-    let params = strpart(text, start+1, end - start - 1)
-    let params = split(params, sepr)
-    let abbr = params[0]
-    if strlen(abbr) == 0 || !has_key(tags, abbr)
-      return
-    endif
-    let rc = params[1]
-    if !(rc>0)
-      return
-    endif
-    if len(params)>2
-      let cc = params[2]
-      if !(cc>0)
-        return
-      endif
-    else
-      let cc = 1
-    end
-
-    let prefix = repeat(' ', start)
-
-    let thecols = []
-    let i = 0
-    while i < cc
-      call add(thecols, '<++>')
-      let i += 1
-    endwhile
-    let columnsText = prefix . '  '. join(thecols, ' & ') . ' \\'
-
-    let lines = []
-    let i = 0
-    while i < rc
-      call add(lines, columnsText)
-      let i += 1
-    endwhile
-    call add(lines, prefix . '\end{' . tags[abbr] . '}<++>')
-
-    let leftPart = strpart(text, 0, start)
-    let rightPart = strpart(text, end)
-    if strlen(rightPart) > 0
-      call add(lines, prefix . rightPart)
-    endif
-    call setline(line('.'), leftPart . '\begin{' . tags[abbr] . '}')
-    call append(line('.'), lines)
-    "call append(line('.'), lines)
-  endif
-endfunction
-
-" autocmd FileType markdown
-inoremap <Bslash><Tab> <Esc>:call Tex()<Esc>a
-" Navigating with guides
-inoremap <Space><Tab> <Esc>/<++><Enter>"_c4l
-vnoremap <Space><Tab> <Esc>/<++><Enter>"_c4l
-map <Space><Tab> <Esc>/<++><Enter>"_c4l
-nmap <C-_>   <Plug>NERDCommenterToggle
-vmap <C-_>   <Plug>NERDCommenterToggle<CR>gv
-
-" Markdown setup
-autocmd FileType markdown inoremap \cs<Tab> \begin{cases}\end{cases}<++><Esc>F\i
-autocmd FileType markdown inoremap \fr<Tab> \frac{<++>}{<++>}<++><Esc>F\i
-autocmd FileType markdown inoremap `<Tab> `$$`<++><Esc>F$i
-autocmd FileType markdown inoremap $<Tab> $$<Enter>$$<Enter><++><Esc>kO
-autocmd FileType markdown inoremap \{ \{\}<++><Esc>F{a
-autocmd FileType markdown vnoremap <Space>b c__<C-r>"__<Esc>
-autocmd FileType json nnoremap <Space>f %!json_pp<Cr>
-
 function! HTML5()
   let html = []
   call setline(1, '<!DOCTYPE html>')
@@ -391,49 +283,3 @@ function! HTML5()
   call add(html, '</html>')
   call append(1, html)
 endfunction
-
-color gruvbox
-set background=dark
-highlight Normal ctermbg=None
-
-" closetag
-" dict
-" Disables auto-close if not in a "valid" region (based on filetype)
-let g:closetag_regions = {
-    \ 'typescript.tsx': 'jsxRegion,tsxRegion',
-    \ 'javascript.jsx': 'jsxRegion',
-    \ }
-let g:closetag_shortcut = '>'
-let g:closetag_filenames = "*.html,*.xhtml,*.phtml,*.js,*.vue,*.tsx"
-"
-"let g:tagalong_additional_filetypes = ['typescript.tsx']
-
-fu! NERDCommenter_before()
-  if &ft == 'vue'
-    let b:isvue = 1
-    let stack = synstack(line('.'), col('.'))
-    if len(stack) > 0
-      let syn = synIDattr((stack)[0], 'name')
-      if len(syn) > 0
-        let syn = tolower(syn)
-        exe 'setf '.syn
-      endif
-    endif
-  endif
-endfu
-fu! NERDCommenter_after()
-  if exists('b:isvue') && b:isvue
-    setf vue
-    let b:isvue = 0
-  endif
-endfu
-"
-
-"fu! NERDCommenter_before()
-  "setf javascript
-"endfu
-
-
-"fu! NERDCommenter_after()
-  "setf vue
-"endfu