diff --git a/platforms/ubuntu/install.sh b/platforms/ubuntu/install.sh
new file mode 100644
index 0000000..d6bfd26
--- /dev/null
+++ b/platforms/ubuntu/install.sh
@@ -0,0 +1,104 @@
+#!/bin/bash
+# TODO(po-kai): 'sudo' on proper places
+set -exuo pipefail
+
+# Check local vimrc's download
+function replace_vimrc() {
+  local repo_vimrc="../../cfg/vimrc"
+  local local_vimrc="$HOME/.vimrc"
+  if [ -f "$local_vimrc" ]; then
+    mv $local_vimrc "$local_vimrc.bak"
+  fi
+  cp $repo_vimrc $local_vimrc
+}
+
+# Check if vim supports python
+function vim_supports_python() {
+  # ref: https://www.feliciano.tech/blog/how-to-check-if-vim-supports-python/
+  local res=`vim --version | grep "+python"`
+  echo $res # E.g. "+conceal +linebreak +python3 +visualextra"
+}
+
+# Install YouCompleteMe
+function install_YCM() {
+  # Ref: https://github.com/ycm-core/YouCompleteMe
+  # Note: there's A LOT of places that might fail you here
+  local password=$1
+
+  # Cmake troubles
+  echo $password | sudo -S apt-get purge -y cmake
+  local version="3.22.1"
+  cwd=`pwd`
+  tmp_dir=$(mktemp -d -t ci-XXXXXXXXXX)
+  cd $tmp_dir
+  wget https://github.com/Kitware/CMake/releases/download/v$version/cmake-$version.tar.gz
+  tar -xzvf cmake-$version.tar.gz
+  cd cmake-$version/
+  ./bootstrap
+  echo $password | sudo -S make
+  echo $password | sudo -S make install
+  cd $cwd
+
+  # G++8
+  echo $password | sudo -S apt-get install -y g++-8
+  echo $password | sudo -S update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-7 700 --slave /usr/bin/g++ g++ /usr/bin/g++-7
+  echo $password | sudo -S update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-8 800 --slave /usr/bin/g++ g++ /usr/bin/g++-8
+
+  # Dependencies
+  echo $password | sudo -S apt install -y build-essential vim-nox python3-dev
+  echo $password | sudo -S apt install -y mono-complete golang nodejs default-jdk npm
+
+  # Compile YCM (YouCompleteMe)
+  ## If having cert error, check https://github.com/LplusKira/vimvimder/issues/1
+  cd ~/.vim/bundle/YouCompleteMe
+  python3 install.py --all
+  cd -
+}
+
+# Install tidy
+function install_tidy() {
+  ### Ref: https://github.com/htacg/tidy-html5/blob/next/README/BUILD.md
+  cwd=`pwd`
+  tmp_dir=$(mktemp -d -t ci-XXXXXXXXXX)
+  cd $tmp_dir
+  git clone https://github.com/htacg/tidy-html5.git
+  cd tidy-html5/build/cmake
+  cmake ../.. -DCMAKE_BUILD_TYPE=Release
+  echo $password | sudo -S make
+  echo $password | sudo -S make install
+  cd $cwd
+}
+
+# Install flake8
+function install_flake8() {
+  pip3 install flake8
+}
+
+# Read in pwd
+echo "Enter your password: "
+read -s password
+
+# Complete dependencies
+## - Prerequisites git, curl, python3, my .vimrc
+echo $password | sudo -S apt-get update -y
+echo $password | sudo -S apt-get install -y git python3 curl cmake
+## - Install 8.2-ver vim
+echo $password | sudo -S add-apt-repository -y ppa:jonathonf/vim
+echo $password | sudo -S apt update -y
+echo $password | sudo -S apt install -y vim
+## - Change owner
+echo $password | sudo -S chown -R $USER "$HOME/.vim*"
+## - Overwrite vimrc
+replace_vimrc
+
+# Install plugins through Vundle
+git clone https://github.com/VundleVim/Vundle.vim.git ~/.vim/bundle/Vundle.vim
+vim +PluginInstall +qall
+
+# Install specials
+## - YCM
+install_YCM $password
+## - tidy
+install_tidy
+## - flake8
+install_flake8
diff --git a/platforms/ubuntu/rrr.sh b/platforms/ubuntu/rrr.sh
new file mode 100644
index 0000000..94b075a
--- /dev/null
+++ b/platforms/ubuntu/rrr.sh
@@ -0,0 +1,85 @@
+#!/bin/bash
+# - (Ubuntu 16.04 and later only)
+set -e
+
+# Checking dependencies ...
+## - Assert prerequisites git, curl, python3, my .vimrc
+apt-get update -y
+apt-get install -y git python3 curl cmake
+#git --version
+#python3 --version
+#curl --version
+#cmake --version
+#pip3 --version
+
+remote_vimrc="https://gist.githubusercontent.com/LplusKira/f68437c2b7e4af2b9686043093320f56/raw/a92eb772af2aeb9dac1fcf85911f69b4837093d2/.vimrc"
+local_vimrc="$HOME/.vimrc" #"/root/.vimrc" #
+curl -o ${local_vimrc} ${remote_vimrc}
+if [ ! -f "$local_vimrc" ]; then
+    echo "$local_vimrc download fails! Abort"
+    exit 1
+fi
+
+# Installing ...
+git clone https://github.com/VundleVim/Vundle.vim.git ~/.vim/bundle/Vundle.vim
+
+vim +PluginInstall +qall
+
+## - Specially handle YouCompleteMe -- complie it mannually @@
+### Ref: https://github.com/ycm-core/YouCompleteMe#linux-64-bit
+apt-get install -y build-essential cmake python3-dev
+### vv mono-complete
+apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
+apt-get install -y apt-transport-https ca-certificates
+echo "deb https://download.mono-project.com/repo/ubuntu stable-xenial main" | tee /etc/apt/sources.list.d/mono-official-stable.list
+apt-get update
+apt install mono-devel
+### ^^ mono-complete
+curl -O https://dl.google.com/go/go1.13.3.linux-amd64.tar.gz
+tar -xvf go1.13.3.linux-amd64.tar.gz
+mv go /usr/local
+for f in ~/.bashrc ~/.zshrc
+do
+  export GOROOT=/usr/local/go
+  export GOPATH=$HOME/go
+  export PATH=$GOPATH/bin:$GOROOT/bin:$PATH
+  echo "export GOROOT=/usr/local/go" >> $f
+  echo "export GOPATH=$HOME/go" >> $f
+  echo "export PATH=$GOPATH/bin:$GOROOT/bin:$PATH" >> $f
+done
+# vv node, npm
+ver=12
+apt-get install -y python-software-properties
+curl -sL "https://deb.nodesource.com/setup_${ver}.x" | bash -
+apt-get install -y nodejs
+# ^^ node, npm
+# vv clang 9 (default clang is too old)
+## Ref: https://justiceboi.github.io/blog/install-clang-9-on-ubuntu/
+## Ref: (if using old clang) https://github.com/ycm-core/YouCompleteMe/issues/3236#issuecomment-439987788
+curl -SL http://releases.llvm.org/9.0.0/clang%2bllvm-9.0.0-x86_64-linux-gnu-ubuntu-16.04.tar.xz | tar -xJC .
+mv clang+llvm-9.0.0-x86_64-linux-gnu-ubuntu-16.04 clang_9.0.0
+sudo mv clang_9.0.0 /usr/local
+for f in ~/.bashrc ~/.zshrc
+do
+  export PATH=/usr/local/clang_9.0.0/bin:$PATH
+  export LD_LIBRARY_PATH=/usr/local/clang_9.0.0/lib:$LD_LIBRARY_PATH
+  echo "PATH=/usr/local/clang_9.0.0/bin:$PATH" >> $f
+  echo "LD_LIBRARY_PATH=/usr/local/clang_9.0.0/lib:$LD_LIBRARY_PATH" >> $f
+done
+# ^^ clang 9 (default clang is too old)
+# Do not use `python3 install.py --all` # this uses some battery-included clang compiler which does not work
+## Ref: https://github.com/ycm-core/YouCompleteMe/issues/1711#issuecomment-329520570
+cd ~/.vim/bundle/YouCompleteMe
+./install.py --clang-completer --system-libclang
+
+
+## - Specially install tidy
+### Ref: https://github.com/htacg/tidy-html5/blob/next/README/BUILD.md
+git clone https://github.com/htacg/tidy-html5.git
+cd tidy-html5/build/cmake
+cmake ../.. -DCMAKE_BUILD_TYPE=Release
+make
+make install
+
+## - Specially install flake8 (python linting)
+pip3 install flake8