diff --git a/install.sh b/install.sh
new file mode 100755
index 0000000..2161283
--- /dev/null
+++ b/install.sh
@@ -0,0 +1,167 @@
+#!/bin/bash
+
+# Color settings
+# Source: https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh
+if [ -t 1 ]; then
+    is_tty() {
+        true
+    }
+else
+    is_tty() {
+        false
+    }
+fi
+
+supports_truecolor() {
+    case "$COLORTERM" in
+    truecolor|24bit) return 0 ;;
+    esac
+
+    case "$TERM" in
+    iterm           |\
+    tmux-truecolor  |\
+    linux-truecolor |\
+    xterm-truecolor |\
+    screen-truecolor) return 0 ;;
+    esac
+
+    return 1
+}
+
+fmt_fatal() {
+    printf '%sfatal: %s%s\n' "${FMT_BOLD}${FMT_RED}" "$*" "$FMT_RESET" >&2
+    exit
+}
+
+fmt_error() {
+    printf '%serror: %s%s\n' "${FMT_RED}" "$*" "$FMT_RESET" >&2
+}
+
+fmt_warning() {
+    echo "${FMT_YELLOW}warning: $1 ${FMT_RESET}" 
+}
+
+fmt_note() {
+    echo "${FMT_GREEN}$1 ${FMT_RESET}"
+}
+
+setup_color() {
+    # Only use colors if connected to a terminal
+    if ! is_tty; then
+        FMT_RAINBOW=""
+        FMT_RED=""
+        FMT_GREEN=""
+        FMT_YELLOW=""
+        FMT_BLUE=""
+        FMT_BOLD=""
+        FMT_RESET=""
+    return
+    fi
+
+    if supports_truecolor; then
+    FMT_RAINBOW="
+        $(printf '\033[38;2;255;0;0m')
+        $(printf '\033[38;2;255;97;0m')
+        $(printf '\033[38;2;247;255;0m')
+        $(printf '\033[38;2;0;255;30m')
+        $(printf '\033[38;2;77;0;255m')
+        $(printf '\033[38;2;168;0;255m')
+        $(printf '\033[38;2;245;0;172m')
+    "
+    else
+    FMT_RAINBOW="
+        $(printf '\033[38;5;196m')
+        $(printf '\033[38;5;202m')
+        $(printf '\033[38;5;226m')
+        $(printf '\033[38;5;082m')
+        $(printf '\033[38;5;021m')
+        $(printf '\033[38;5;093m')
+        $(printf '\033[38;5;163m')
+    "
+    fi
+
+    FMT_RED=$(printf '\033[31m')
+    FMT_GREEN=$(printf '\033[32m')
+    FMT_YELLOW=$(printf '\033[33m')
+    FMT_BLUE=$(printf '\033[34m')
+    FMT_BOLD=$(printf '\033[1m')
+    FMT_RESET=$(printf '\033[0m')
+}
+# END of color settings
+
+dotfile_path=$(cd $(dirname $0); pwd)
+home_slashes=${HOME//\//\\\/}
+if [[ ! $dotfile_path == ${home_slashes}* ]]; then 
+    fmt_fatal "\"$dotfile_path\" is not under \"$HOME\". aborting ..."
+fi
+dotfile_home_path=${dotfile_path/${home_slashes}/\~}
+dotfile_relative_path=${dotfile_path#${home_slashes}\/}
+crontab_job="0 * * * * cd ${dotfile_path} && env git pull"
+
+ask_for_yN()
+{
+    while true; do
+        read -p "$1 [yN]: " yn
+        case $yn in
+            [Yy]* ) return 1;;
+            [Nn]* ) return 0;;
+            * ) return 0;;
+        esac
+    done
+}
+
+insert_if_not_exist()
+{
+    filename=$1
+    line=$2
+    fmt_note "installing \"$line\" into \"$filename\" ..."
+    if [ ! -f "$filename" ]; then
+        touch $filename
+    fi
+    grep -qxF -- "$line" "$filename" || echo "$line" >> "$filename"
+}
+
+create_symlink()
+{
+    src=$1
+    dest=$2
+    fmt_note "creating symlink \"$dest\" --> \"$src\" ..."
+    if [ ! -f "$src" ]; then
+        fmt_error "\"$src\" does not exist! aborting this job ..."
+        return 1
+    fi
+    if [ -f "$dest" ]; then
+        fmt_warning "\"$dest\" already exists! stat output:"
+        echo ----------
+        env stat $dest
+        echo ----------
+        ask_for_yN "${FMT_YELLOW}would you like to replace ${dest}?${FMT_RESET}"
+        if [ $? -eq 1 ]; then 
+            rm $dest
+        else
+            fmt_error "\"$dest\" already exists! aborting this job ..."
+            return 1
+        fi
+    fi
+    ln -s $src $dest
+}
+
+install_crontab(){
+    fmt_note "installing \"$crontab_job\" to crontab ..."
+    ( crontab -l | grep -v "${crontab_job//\*/\\\*}" | grep -v "no crontab for"; echo "$crontab_job" ) | crontab -
+}
+
+uninstall_crontab(){
+    fmt_note uninstalling "\"$crontab_job\"" from crontab ...
+    ( crontab -l | grep -v"$crontab_job" ) | crontab - 
+}
+
+install(){
+    install_crontab
+    insert_if_not_exist "${HOME}/.zshrc" "source ${dotfile_home_path}/.zshrc2"
+    create_symlink "${dotfile_path}/.ssh/authorized_keys2" "${HOME}/.ssh/authorized_keys2"
+    fmt_note "job done!"
+}
+
+setup_color
+install