diff --git a/1st b/1st
deleted file mode 100644
index 5bdcd96..0000000
--- a/1st
+++ /dev/null
@@ -1,61 +0,0 @@
-#!/usr/bin/env zsh
-
-help(){
-  echo "1st _install: 
-    Install brew, zsh, vim, tmux, git, fzf, gdb, nodejs(yarn), py, etc
-    etc contains .docker, .yarnrc, .notable.json"  #.skhdrc, .yabairc 
-}
-
-(){
-  help
-}
-
-_install(){
-
-  xcode-select --install
-
-  if test ! $(which brew); then
-    /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
-  fi
-
-  brew update
-  mas upgrade
-  brew tap homebrew/bundle
-  brew bundle --file=$HOME/dotfiles/Brewfile #Brewfile로 설치
-  brew bundle --file=$HOME/dotfiles/Brewmas #mas로 appstore 앱 설치
-  #remove old version
-  brew cleanup
-  brew cask cleanup
-  
-  # restore from Dropbox 
-  mackup restore
-
-  # git config (mackup으로 dropbox에 링크생성되지 않은 경우)
-  [ ! -f $HOME/.gitconfig ] && ln -ns $HOME/dotfiles/.gitconfig $HOME/.gitconfig
-  [ ! -f $HOME/.gitignore_global ] && ln -ns $HOME/dotfiles/.gitignore_global $HOME/.gitignore_global
-#  [ ! -f $HOME/.gitconfig ] && ln -bns $HOME/dotfiles/.gitconfig $HOME/.gitconfig
-#  [ ! -f $HOME/.gitignore_global ] && ln -bns $HOME/dotfiles/.gitignore_global $HOME/.gitignore_global
-#  git config --global inlude.path ../.gitconfig
-
-  # oh-my-zsh 
-  sh -c "$(curl -fsSL https://raw.github.com/robbyrussell/oh-my-zsh/master/tools/install.sh)"
-
-  #nvm 
-  curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.35.3/install.sh | bash
-
-  nvm install --lts
-
-  npm install --global yarn
-  
-  #yarn global path
-  yarn config set prefix ~/.yarn 
-  yarn config get prefix
-  cat ~/.yarnc 
-
-  # autoenv
-  source /usr/local/opt/autoenv/activate.sh
-
-  
-}
-
-$@
diff --git a/README.md b/README.md
index 2be4a88..32d2604 100644
--- a/README.md
+++ b/README.md
@@ -1,40 +1,76 @@
+# Dotfiles for Backup and Restore
+
+This repository is designed to back up Mac configuration files (dotfiles), other settings, plugins, and scripts used for installation and convenience. Most of the files here are automatically saved and synced to Dropbox, so these files are optional backups. The following instructions include steps for restoring files from Dropbox as well.
+
+
 ## Backup
 
+To back up your environment, use the back command with `rsync`. `rsync` can be installed via Homebrew. The command format is:
+
 ```
-$ back _<option>
-```
-If command 
+$ back _<tool>
 ```
-$ back _all
+For detailed usage of the back command, refer to the following help message:
 ```
-backup zsh, vim, tmux, git, fzf, nodejs, py, brew, etc, karabiner
+$ back help
+Usage: back [OPTIONS] [GROUP_NAME]
 
-`_all` is not contain rclone and gdb
+  Back up the specified dotfile groups to the dotfiles repository using rsync with -azvhrubRL options.
 
-### other option
+  Groups:
+    _git, _brew, _zsh, _vim, _fzf, _tmux, _gdb, _yarn, _python, _karabiner
+
+  Options:
+    -A, --all, all      Back up all groups
+    -B, --basic, basic  Back up a predefined set of essential groups
+                        (git, brew, zsh, vim, fzf, tmux, karabiner)
+  
+```
 
-option: zsh, vim, tmux, git, fzf, nodejs, py, brew, etc, karabiner, rclone, gdb
 
 ## Restore
 
-First,  
+To restore, run `bootstrap` and `setup`, which internally rely on `mackup` and `stow` for the restoration process. `mackup` and `stow` are installed as part of the `bootstrap` process, so there is no need to install them separately. Both tools can be installed via Homebrew."
+
+To restore your environment, follow these steps:
+
+1. Install essential tools and software:
 
   ```
-  $ 1st _install  
+  $ bootstrap
   ```
-then, install brew, oh-my-zsh and nvm, yarn, 
-      set git config
-
-Second, restore. There are two option
+This will install Homebrew and reinstall all previously managed software using Homebrew. Next, run 'mackup restore' to restore settings such as .vimrc and other dotfiles related to git, zsh, vim, and others. Also, install oh-my-zsh, nodejs and yarn. 
+Currently, the software may be set to use either specific versions or the latest versions, depending on the setup. It would be beneficial to allow for selection between these options in the future.
 
-1) Restore all from **Dropbox** using Mackup
+2. Selectively restore **dotfiles**:
 
-  ```
-  $ mackup restore
-  ```  
-2) Selectively restore from **dotfiles** using stow by script
+Use the `setup` command to create symbolic links for dotfiles, or alternatively, copy them individually using `stow`, `rsync` or other methods. 
 
   ```
-  $ setup.zsh
+  $ setup _<tools>
   ```
 
+To learn more about using the back command, check the  help option:
+```
+$ setup -h
+Usage: setup [OPTIONS] [GROUP_NAME]...
+
+  Restore specified dotfile groups using stow. Groups are symlinked to $HOME.
+  Multiple groups can be listed separated by spaces.
+  Use 'setup --basic' or 'setup -B' for a predefined set of essential groups.
+
+  Groups:
+    _vim, _zsh, _tmux, _git, _gdb, _fzf, _yarn, _python, _karabiner, _rclone
+
+  Options:
+    -B, --basic, basic  Restore a predefined set of essential groups
+                        (_vim, _zsh, term)
+
+  Example:
+    setup _vim _zsh _tmux  # Restores vim, zsh, and tmux configurations
+    setup -B              # Restores the basic configuration groups
+```
+
+
+
+Each folder in this repo is structured for use with `stow`. Some files, like those in dotfiles, are stored both in Dropbox and in this repository, allowing you to choose the source for restoration. However, currently, `1st` prioritizes fetching files from Dropbox first due to considerations for installation order and synchronization convenience. This means that symbolic links are created for files found in Dropbox. If a file is not present in Dropbox—whether intentionally omitted or missing—it will be obtained from the dotfiles repository.
\ No newline at end of file
diff --git a/back b/back
old mode 100644
new mode 100755
index 8f72b26..10a22d2
--- a/back
+++ b/back
@@ -6,27 +6,44 @@
 #rsync option 
 #-v : print log
 #-h : human readable
-#-a : archive mode : -r, -t(타입스탬프 보존), -l (심볼릭 링크 보존), -p(permission 보존), -g(g그룹 보존), -o(소유자 보존 - root 만 가능),  -D(device, special 파일 보존)과 동일
+#-a : archive mode : -r, -t(타임스탬프 보존), -l (심볼릭 링크 보존), -p(permission 보존), -g(g그룹 보존), -o(소유자 보존 - root 만 가능),  -D(device, special 파일 보존)과 동일
 #-z : compress
 #-r : recurse into directories
 #-b : backup --suffix ~
 #-u : skip files that are newer on the receiver
 #-R : use relative path naems
 #-L : symbolic link를 따라가서 원본 파일을 복제
+
 help(){
-  echo "back _[GROUP_NAME]
-  GROUP: zsh, vim, tmux, git, fzf, docker, yarn, py, etc, brew, karabiner, (gdb)
-     or 'all' in place of GROUP for principal things
-    "
+  echo "Usage: back [OPTIONS] [GROUP_NAME]
+
+  Back up the specified dotfile groups to the dotfiles repository using rsync with -azvhrubRL options.
+
+  Groups: 
+    _git, _brew, _zsh, _vim, _fzf, _tmux, _gdb, _yarn, _python, _karabiner
+  
+  Options: 
+    -A, --all, all      Back up all groups
+    -B, --basic, basic  Back up a predefined set of essential groups 
+                        (_git, _brew, _zsh, _vim, _fzf, _tmux, _karabiner)"
 }
 
-(){
-  help
+_git(){
+  # cp -Riv --parents ~/.gitconfig ~/dotfiles/git/.gitconfig
+  # cp -Riv --parents ~/.gitignore_global ~/dotfiles/git/.gitignore_global
+  rsync -azvhrubR -L ~/./.gitconfig ~/dotfiles/_git
+  rsync -azvhrubR -L ~/./.gitignore_global ~/dotfiles/_git
 }
 
-_karabiner(){
-  rsync -azvhrubR -L ~/./.config/karabiner/assets ~/dotfiles/_karabiner
-  rsync -azvhrubR -L ~/./.config/karabiner/karabiner.json ~/dotfiles/_karabiner 
+_brew(){
+  rm ~/dotfiles/Brewfile~
+  rm ~/dotfiles/Brewmas~
+  mv ~/dotfiles/Brewfile ~/dotfiles/Brewfile~
+  mv ~/dotfiles/Brewmas ~/dotfiles/Brewmas~
+  brew bundle dump --force --file=~/./Brewfile
+  brew bundle --mas dump --force --file=~/./Brewmas
+  rsync -azvhrubR -L ~/./Brewfile ~/dotfiles/Brewfile
+  rsync -azvhrubR -L ~/./Brewmas ~/dotfiles/Brewmas
 }
 
 _zsh(){
@@ -39,9 +56,9 @@ _zsh(){
 
 _vim(){
   rsync -azvhrubR -L ~/./.vimrc ~/dotfiles/_vim
-  rsync -azvhrubR -L ~/./.vim/autoload/ ~/dotfiles/_vim
+  # rsync -azvhrubR -L ~/./.vim/autoload/ ~/dotfiles/_vim
   rsync -azvhrubR -L ~/./.vim/plugged/ ~/dotfiles/_vim
-  rsync -azvhrubR -L ~/./.config/coc/extensions ~/dotfiles/_vim
+  # rsync -azvhrubR -L ~/./.config/coc/extensions ~/dotfiles/_vim
   rsync -azvhrubR -L ~/./.config/nvim/ ~/dotfiles/_vim
   rsync -azvhrubR -L ~/./.local/share/nvim/session/ ~/dotfiles/_vim
   rsync -azvhrubR -L ~/./.NERDTreeBookmarks ~/dotfiles/_vim
@@ -49,19 +66,6 @@ _vim(){
   # rsync -azvhrubR -L ~/./.viminfo/ ~/dotfiles/vim
 }
 
-_tmux(){
-  # cp -Riv --parents ~/.tmux.conf ~/dotfiles/tmux/.tmux.conf
-  rsync -azvhrubR -L ~/./.tmux.conf ~/dotfiles/_tmux
-  # rsync -azvhrubR -L ~/./.tmux/plugins/ ~/dotfiles/tmux
-}
-
-_git(){
-  # cp -Riv --parents ~/.gitconfig ~/dotfiles/git/.gitconfig
-  # cp -Riv --parents ~/.gitignore_global ~/dotfiles/git/.gitignore_global
-  rsync -azvhrubR -L ~/./.gitconfig ~/dotfiles/_git
-  rsync -azvhrubR -L ~/./.gitignore_global ~/dotfiles/_git
-}
-
 _fzf(){
   # cp -Riv --parents ~/.fzfignore ~/dotfiles/fzf/.fzfignore
   # cp -Riv --parents ~/.fzf.zsh ~/dotfiles/fzf/.fzf.zsh
@@ -69,6 +73,12 @@ _fzf(){
   rsync -azvhrubR -L ~/./.fzf.zsh/ ~/dotfiles/_fzf
 }
 
+_tmux(){
+  # cp -Riv --parents ~/.tmux.conf ~/dotfiles/tmux/.tmux.conf
+  rsync -azvhrubR -L ~/./.tmux.conf ~/dotfiles/_tmux
+  # rsync -azvhrubR -L ~/./.tmux/plugins/ ~/dotfiles/tmux
+}
+
 _gdb(){
   # cp -Riv --parents ~/.gdbinit ~/dotfiles/gdb/.gdbinit
   # cp -Riv --parents ~/gdb.xml ~/dotfiles/gdb/gdb.xml
@@ -88,58 +98,84 @@ _yarn(){
   # rsync -azvhrubR -L ~/./.nvm/ ~/dotfiles/_yarn
   rsync -azvhrubR -L ~/./.yarn/yarn.lock ~/dotfiles/_yarn
   rsync -azvhrubR -L ~/./.yarn/package.json ~/dotfiles/_yarn
-  rsync -azvhrubR -L ~/./.yarnrc ~/dotfiles/_yarn
+  # rsync -azvhrubR -L ~/./.yarnrc ~/dotfiles/_yarn
   # rsync -azvhrubR -L ~/./.config/gatsby/ ~/dotfiles/_yarn
   # rsync -azvhrubR -L ~/./.config/configstore/ ~/dotfiles/_yarn
 }
 
-_py(){
-  rsync -azvhrubR -L ~/./.pyenv/version/ ~/dotfiles/_py
-  # rsync -azvhrubR -L ~/./piplist ~/dotfiles/_py
+_python(){
+  rsync -azvhrubR -L ~/./.pyenv/version/ ~/dotfiles/_python
+  # rsync -azvhrubR -L ~/./piplist ~/dotfiles/_python
+}
+
+_karabiner(){
+  rsync -azvhrubR -L ~/./.config/karabiner/assets ~/dotfiles/_karabiner
+  rsync -azvhrubR -L ~/./.config/karabiner/karabiner.json ~/dotfiles/_karabiner 
 }
 
 _docker(){
   rsync -azvhrubR -L ~/./.docker/ ~/dotfiles/_docker
 }
 
+_rclone(){
+  rsync -azvhrubR -L ~/./rclone_mount.sh ~/dotfiles/_rclone
+  rsync -azvhrubR -L ~/./rclone_umount.sh ~/dotfiles/_rclone
+  rsync -azvhrubR -L ~/./.config/rclone ~/dotfiles/_rclone
+}
 
 _etc(){
+  echo "etc"
   # rsync -azvhrubR -L ~/./.fasd ~/dotfiles/_etc
   # rsync -azvhrubR -L ~/./.notable.json/ ~/dotfiles/_etc
  # rsync -azvhrubR -L ~/./.skhdrc ~/dotfiles/_etc
  # rsync -azvhrubR -L ~/./.yabairc ~/dotfiles/_etc
 }
 
-_brew(){
-  rm ~/dotfiles/Brewfile~
-  rm ~/dotfiles/Brewmas~
-  mv ~/dotfiles/Brewfile ~/dotfiles/Brewfile~
-  mv ~/dotfiles/Brewmas ~/dotfiles/Brewmas~
-  brew bundle dump --force --file=~/./Brewfile
-  brew bundle --mas dump --force --file=~/./Brewmas
-  rsync -azvhrubR -L ~/./Brewfile ~/dotfiles/Brewfile
-  rsync -azvhrubR -L ~/./Brewmas ~/dotfiles/Brewmas
-  
-}
-
-_rclone(){
-  rsync -azvhrubR -L ~/./rclone_mount.sh ~/dotfiles/_rclone
-  rsync -azvhrubR -L ~/./rclone_umount.sh ~/dotfiles/_rclone
-  rsync -azvhrubR -L ~/./.config/rclone ~/dotfiles/_rclone
-}
-
- _all(){
- # _rclone
+all(){
+  _git
   _brew
-  _etc
-  _py
-  _yarn
- # _gdb
-  _fzf
+  _zsh
   _vim
-  _git
+  _fzf
   _tmux
+  _gdb
+  _yarn
+  _python
+  _rclone
+  _etc
+  }
+
+basic(){
+  _git
+  _brew
   _zsh
+  _vim
+  _fzf
+  _tmux
   _karabiner
   }
-$@
+
+main(){
+  if [ $# -eq 0 ]; then
+    help
+  elif [ $# -gt 0 ]; then
+    case $1 in
+      -h|--help|help)
+        help
+        return 0
+        ;;
+      -B|--basic|basic)
+        basic
+        ;;
+      -A|--all|all)
+        all
+        ;;
+      *)
+        "$@"
+        ;;
+    esac
+    shift
+  fi
+}
+
+main "$@"
diff --git a/bootstrap b/bootstrap
new file mode 100755
index 0000000..e712c95
--- /dev/null
+++ b/bootstrap
@@ -0,0 +1,78 @@
+#!/usr/bin/env zsh
+
+# help(){
+#   echo "bootstrap install: 
+#     Install git, brew, zsh, vim, fzf, tmux, gdb, nodejs, yarn, python and others"
+# }
+
+install(){
+  # Xcode Command Line Tools for Homebrew 
+  echo "[$ZSH_ARGZERO] Pre-installing Xcode Command Line Tools for Homebrew..."
+  xcode-select --install
+
+  # Homebrew
+  echo "[$ZSH_ARGZERO] Installing Homebrew..."
+
+  if test ! $(which brew); then
+    /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
+  fi
+
+  brew update
+  mas upgrade
+  brew tap homebrew/bundle
+  brew bundle --file=$HOME/dotfiles/Brewfile #Brewfile로 설치
+  brew bundle --file=$HOME/dotfiles/Brewmas #mas로 appstore 앱 설치
+  #remove old version
+  brew cleanup
+  brew cask cleanup
+  
+  # restore from Dropbox 
+  echo "[$ZSH_ARGZERO] Executing 'mackup restore' command..."
+  mackup restore
+
+  # git config (mackup으로 dropbox에서 연결되지 않은 경우 git에서 가져옴)
+  [ ! -f $HOME/.gitconfig ] && echo "[$ZSH_ARGZERO] .gitconfig not found. Fetching from dotfiles..." || true \
+  && rsync -azvhrubR -L ~/dotfiles/_git/./.gitconfig ~ && echo "[$ZSH_ARGZERO] .gitconfig fetching complete..."
+  [ ! -f $HOME/.gitignore_global ] && echo "[$ZSH_ARGZERO] .gitignore_global not found. Fetching from dotfiles..." || true \
+  && rsync -azvhrubR -L ~/dotfiles/_git/./.gitignore_global ~ && echo "[$ZSH_ARGZERO] .gitignore_global fetching complete..."
+  #[ ! -f $HOME/.gitconfig ] && ln -ns $HOME/dotfiles/.gitconfig $HOME/.gitconfig
+  #[ ! -f $HOME/.gitignore_global ] && ln -ns $HOME/dotfiles/.gitignore_global $HOME/.gitignore_global
+#  [ ! -f $HOME/.gitconfig ] && ln -bns $HOME/dotfiles/.gitconfig $HOME/.gitconfig
+#  [ ! -f $HOME/.gitignore_global ] && ln -bns $HOME/dotfiles/.gitignore_global $HOME/.gitignore_global
+#  git config --global inlude.path ../.gitconfig
+
+
+  # oh-my-zsh
+  sh -c "$(curl -fsSL https://raw.github.com/robbyrussell/oh-my-zsh/master/tools/install.sh)"
+  # zsh
+  [ ! -f $HOME/.zshenv ] && echo "[$ZSH_ARGZERO] .zshenv not found. Fetching from dotfiles..." || true \
+  && rsync -azvhrubR -L ~/dotfiles/_zsh/./.zshenv ~ && echo "[$ZSH_ARGZERO] .zshenv fetching complete..." 
+  [ ! -f $HOME/.zshrc] && echo "[$ZSH_ARGZERO] .zshrc not found. Fetching from dotfiles..." || true \
+  && rsync -azvhrubR -L ~/dotfiles/_zsh/./.zshrc ~ && echo "[$ZSH_ARGZERO] .zshrc fetching complete..."
+
+
+  # nodejs
+  echo "[$ZSH_ARGZERO] Installing NVM..."
+  curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.35.3/install.sh | bash && \
+  echo "[$ZSH_ARGZERO] Installing Node.js LTS version..." && \
+  nvm install --lts && \
+  echo "[$ZSH_ARGZERO] Installing Yarn..." && \
+  npm install --global yarn
+  
+  # yarn global path
+  yarn config set prefix ~/.yarn && yarn config get prefix && cat ~/.yarnc 
+
+  # autoenv
+  source /usr/local/opt/autoenv/activate.sh
+
+  
+}
+install
+
+# if [ $# -eq 0 ]; then
+#   help
+# elif [[ "$1" == "install" ]]; then
+#   install 
+# else
+#   help
+# fi
diff --git a/setup b/setup
new file mode 100755
index 0000000..28d48ab
--- /dev/null
+++ b/setup
@@ -0,0 +1,95 @@
+#!/usr/bin/env zsh
+
+git submodule init
+git submodule update
+
+# set basic apps
+
+# what directories should be installable by all users including the root user
+root=(
+
+)
+
+# for local user
+useronly=(
+  _vim
+  _zsh
+  term
+ 
+)
+
+help(){
+  
+  echo "Usage: setup [OPTIONS] [GROUP_NAME]...
+
+  Restore specified dotfile groups using stow. Groups are symlinked to \$HOME.
+  Multiple groups can be listed separated by spaces.
+  Use 'setup --basic' or 'setup -B' for a predefined set of essential groups.
+
+  Groups:
+    _vim, _zsh, _tmux, _git, _gdb, _fzf, _yarn, _python, _karabiner, _rclone
+
+  Options:
+    -B, --basic, basic  Restore a predefined set of essential groups
+                        (_vim, _zsh, term)
+
+  Example:
+    setup _vim _zsh _tmux  # Restores vim, zsh, and tmux configurations
+    setup -B              # Restores the basic configuration groups
+  "
+}
+
+
+stowit(){
+  # -v verbose
+  # -R recursive
+  # -t target
+  stow -v -R -t ${HOME} ${app}
+}
+
+basic(){
+  # install apps available to all users 
+  echo "##### Stowing apps for all users "
+  echo ""
+
+  for app in ${root[@]}; do
+	  echo "Stowing $app in progress."
+	  stowit "${HOME}" $app
+  done
+
+  # install only user space folders (not root user)
+  echo ""
+  echo "##### Stowing apps for user only: $(whoami)"
+  echo ""
+  for app in ${useronly[@]}; do
+    if [[ $USER != "root" ]]; then				
+	    echo "Stowing $app in progress."
+      stowit "${HOME}" $app
+    fi 
+  done
+
+  echo ""
+  echo "##### ALL DONE"
+}
+
+# Check if any arguments are provided
+if [ $# -eq 0 ]; then
+  help
+fi
+
+while [[ $# -gt 0 ]]; do
+  case $1 in
+    -B|--basic|basic)
+      basic
+      ;;
+    -h|--help|help)
+      help
+      return 0
+      ;;
+    *)
+      app=$1
+      stowit $HOME $app
+      ;;
+  esac
+  shift
+done
\ No newline at end of file
diff --git a/setup.zsh b/setup.zsh
deleted file mode 100755
index 8b5dcf2..0000000
--- a/setup.zsh
+++ /dev/null
@@ -1,50 +0,0 @@
-#!/usr/bin/env zsh
-
-git submodule init
-git submodule update
-
-#for root 
-#run with sudo
-base=(
- vim
- zsh
- config
- term
-)
-
- #
-useronly=(
-)
-
-stowit(){
- usr=$1
- app=$2
- # -v verbose
-    # -R recursive
-    # -t target
-    stow -v -R -t ${usr} ${app}
-}
-
-
-# install apps available to local users and root
-echo "##### Stowing base app"
-echo ""
-
-for app in ${base[@]}; do
-	echo "Stowing $app done."
-	stowit "${HOME}" $app
-done
-
-# install only user space folders
-echo ""
-echo "##### Stowing apps for user only: $(whoami)"
-echo ""
-for app in ${useronly[@]}; do
-  if [[ $USER != "root" ]]; then				
-	echo "Stowing $app done."
-        stowit "${HOME}" $app
-  fi 
-done
-
-echo ""
-echo "##### ALL DONE"