diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index ee15f1f..c584211 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -7,12 +7,6 @@ jobs:
     name: test on ubuntu
     runs-on: ubuntu-latest
     steps:
-      - name: install dependencies
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y git python3 python3-pip zsh curl inetutils-ping
-          sudo pip3 install requests
-      
       - name: checkout repo
         uses: actions/checkout@v3
         with:
@@ -22,7 +16,8 @@ jobs:
         run: |
           rev=`git rev-parse HEAD`
           pwd
-          ./install.sh -dl
+          set -x
+          ./install.sh -adl
           test `git rev-parse HEAD` = "$rev"
 
       - name: antigen build
@@ -37,6 +32,7 @@ jobs:
           source tools/test.zsh
           antigen reset
           rm -rf $ANTIGEN $HOME/.antigen
+          ./install.sh -dl
 
       - name: antigen build with DFS_NO_WALL
         shell: /bin/zsh -ileo PIPE_FAIL {0}
@@ -54,12 +50,6 @@ jobs:
     name: test on macos
     runs-on: macos-12
     steps:
-      - name: install dependencies
-        run: |
-          brew update
-          brew install git python3 zsh curl
-          sudo pip3 install requests
-
       - name: checkout repo
         uses: actions/checkout@v3
         with:
@@ -69,7 +59,8 @@ jobs:
         run: |
           rev=`git rev-parse HEAD`
           pwd
-          ./install.sh -dl
+          set -x
+          ./install.sh -adl
           test `git rev-parse HEAD` = "$rev"
 
       - name: antigen build
@@ -84,6 +75,7 @@ jobs:
           source tools/test.zsh
           antigen reset
           rm -rf $ANTIGEN $HOME/.antigen
+          ./install.sh -dl
 
       - name: antigen build with DFS_NO_WALL
         shell: /bin/zsh -ileo PIPE_FAIL {0}
@@ -103,7 +95,7 @@ jobs:
     steps:
       - name: remove dependencies
         run: |
-          sudo apt-get -y remove curl vim
+          sudo apt-get -y remove curl vim python3
 
       - name: checkout repo
         uses: actions/checkout@v3
@@ -113,6 +105,7 @@ jobs:
       - name: install dfs
         run: |
           rev=`git rev-parse HEAD`
+          set -x
           ./install.sh -dal
           test `git rev-parse HEAD` = "$rev"
 
diff --git a/.update.sh b/.update.sh
index c9ad28d..b82bb5e 100644
--- a/.update.sh
+++ b/.update.sh
@@ -9,10 +9,10 @@ DFS_UPDATE_CHANNEL=${DFS_UPDATE_CHANNEL:-"main"}
 
 # fetch origin
 cd $DOTFILES
-git fetch --all
+git fetch --all --prune
 if [[ -n "$(git status -s)" ]]; then
     fmt_error "directory not clean"
-    post_log "ERROR" "$THIS_FILE" "directory not clean"
+    apost_beacon "dfs.dirty"
     exit
 fi
 
@@ -25,18 +25,18 @@ case $DFS_UPDATE_CHANNEL in
 esac
 if [[ ${#DFS_COMMIT} != 40 ]]; then
     fmt_error "invalid commit id"
-    post_log "ERROR" "$THIS_FILE" "invalid commit id: ${DFS_COMMIT}"
+    apost_beacon "dfs.invalid-commit"
+    apost_log "ERROR" "$THIS_FILE" "invalid commit id: ${DFS_COMMIT}"
     exit
 fi
 
 # update
 if [[ "$(git rev-parse HEAD)" == "$DFS_COMMIT" ]]; then
     fmt_info "nothing to do"
-    post_log "INFO" "$THIS_FILE" "nothing to do"
 else
     fmt_info "checking out to commit $DFS_COMMIT ..."
     if [[ -z "$DFS_DEV" ]]; then
-        post_log "INFO" "$THIS_FILE" "will check out to commit $DFS_COMMIT"
+        post_beacon "dfs.updated"
         git -c advice.detachedHead=false checkout $DFS_COMMIT
         cp ./.update.sh ./update.sh && chmod +x ./update.sh && exit $DFS_UPDATED_RET
     else
diff --git a/.zshrc2 b/.zshrc2
index 5af6eda..66b879d 100644
--- a/.zshrc2
+++ b/.zshrc2
@@ -1,7 +1,12 @@
 # env for shell
 export TERM="xterm-256color"
-export LC_ALL=C.UTF-8
-export LANG=C.UTF-8
+if ( locale -a | grep -qxE "C.UTF-8|C.utf8" ); then
+    export LC_ALL=C.UTF-8
+    export LANG=C.UTF-8
+else
+    export LC_ALL=en_US.UTF-8
+    export LANG=en_US.UTF-8
+fi
 export DOTFILES=$( cd "$( dirname "${BASH_SOURCE[0]:-${(%):-%x}}" )" && pwd )
 export PATH="$PATH:$DOTFILES/scripts"
 export EDITOR='vim'
@@ -82,6 +87,13 @@ antigen theme ${ZSH_THEME:-$TMP_THEME}
 antigen apply
 # end of antigen config
 
+# beacon
+if [[ "$EUID" == "0" ]]; then
+    "$DOTFILES/tools/common.sh" apost_beacon "sys.login.root"
+else
+    "$DOTFILES/tools/common.sh" apost_beacon "sys.login.user"
+fi
+
 # alias
 alias "pls"='sudo $(fc -ln -1)'
 alias "se"='sudo -sE'
@@ -144,6 +156,7 @@ bindkey "\ed" delete-char  # alt+d
 # dfs
 dfs()
 {
+    setopt local_options err_return pipe_fail
     case $1 in
         cd     ) cd "$DOTFILES" ;;
         update ) "$DOTFILES/update.sh" ;;
@@ -169,6 +182,7 @@ dfs()
             echo 'Done. Please open a new shell to see the changes.'
             ;;
         log    ) "$DOTFILES/tools/common.sh" "post_log" "INFO" "dfs" "$2" ;;
+        beacon ) "$DOTFILES/tools/common.sh" "post_beacon" "$2" ;;
         *      ) echo "unknown command \"$1\". available: update, force-update, version, reset, cd, log" ;;
     esac
 }
diff --git a/install.sh b/install.sh
index 978600c..6429b2c 100755
--- a/install.sh
+++ b/install.sh
@@ -29,55 +29,37 @@ HOME_SYMLINKS_DST[0]=".ssh/authorized_keys2"
 install_dependencies()
 {
     fmt_note "installing dependencies ..."
-    case $(get_os_type) in
-        "linux" )
-            case $(get_linux_dist) in
-                "ubuntu"|"debian" )
-                    $SUDO apt-get update
-                    $SUDO apt-get install -y git zsh bash tmux vim python3 python3-pip curl inetutils-ping cmake less bsdmainutils
-                    ;;
-                "alpine" )
-                    $SUDO apk update
-                    $SUDO apk add zsh bash git tmux vim curl python3 py3-pip fzf iputils coreutils util-linux
-                    ;;
-                * ) fmt_error "dfs auto-install is not implemented on linux distribution: $(get_linux_dist)"
-            esac
+    case $(get_os_name) in
+        "ubuntu"|"debian" )
+            $SUDO DFS_LITE=$DFS_LITE "$DOTFILES/tools/ubuntu.sh" apt-install
+            ;;
+        "alpine" )
+            $SUDO DFS_LITE=$DFS_LITE "$DOTFILES/tools/alpine.sh" apk-add
             ;;
         "macos" )
-            $SUDO brew update
-            $SUDO brew install git python3 zsh curl tmux vim util-linux
+            DFS_LITE=$DFS_LITE "$DOTFILES/tools/macos.sh" brew-install
             ;;
         "msys" )
-            pacman -Syu
-            pacman -S tmux git zsh bash curl vim python3 python3-pip
-            SUDO=""
+            DFS_LITE=$DFS_LITE "$DOTFILES/tools/msys2.sh" pacman-S
             ;;
-        * ) fmt_error "dfs auto-install is not implemented on OS: $(get_os_type)"
+        * ) fmt_error "dfs auto-install is not implemented on OS: $(get_os_name)"
     esac
-
-    if [[ -x $(command -v pip3) ]]; then
-        $SUDO pip3 install requests
-    elif [[ -x $(command -v pip) ]]; then
-        $SUDO pip install requests
-    else
-        fmt_error "pip3 and pip not found. is pip correctly installed?"
-    fi
 }
 
 preinstall_check()
 {
     fmt_note "checking requirements ..."
-    local mandatory_commands=( "git" "zsh" "curl" )
-    local optional_commands=( "python3" "vim" "tmux" "ping" )
+    local mandatory_commands=( "git" "zsh" "curl" "grep" "cat" "cp" "bash" "mkdir" )
+    local optional_commands=( "vim" "tmux" "ping" )
     for i in "${mandatory_commands[@]}"; do
-        if [[ ! -x "$(command -v $i)" ]]; then
+        if ! command -v $i 1>/dev/null; then
             fmt_info "all this utils are required: ${mandatory_commands[@]}"
             fmt_info "install them manually or check scripts in tools/"
             fmt_fatal "\"$i\" not found. aborting ..."
         fi
     done
     for i in "${optional_commands[@]}"; do
-        if [[ ! -x "$(command -v $i)" ]]; then
+        if ! command -v $i 1>/dev/null; then
             fmt_warning "\"$i\" not found"
             ask_for_Yn "continue anyway?"
             if [[ "$?" == "0" ]]; then
@@ -167,7 +149,8 @@ uninstall_symlink()
     done
 }
 
-install_crontab(){
+install_crontab()
+{
     if [[ -x $(command -v crontab) ]]; then
         fmt_note "installing \"$CRON_JOB\" to crontab ..."
         ( crontab -l | grep -vxF "${CRON_JOB}" | grep -v "no crontab for"; echo "$CRON_JOB" ) | crontab -
@@ -176,7 +159,8 @@ install_crontab(){
     fi
 }
 
-uninstall_crontab(){
+uninstall_crontab()
+{
     if [[ -x $(command -v crontab) ]]; then
         fmt_note "removing \"$CRON_JOB\" from crontab ..."
         ( crontab -l | grep -vxF "$CRON_JOB" ) | crontab -
@@ -185,7 +169,8 @@ uninstall_crontab(){
     fi
 }
 
-install_tmux_tpm(){
+install_tmux_tpm()
+{
     TMUX_TPM="$HOME/.tmux/plugins/tpm"
     if [[ -x $(command -v tmux) && ! -d "$TMUX_TPM" ]]; then
         fmt_note "installing tmux tpm ..."
@@ -204,7 +189,8 @@ install_tmux_tpm(){
     fi
 }
 
-install_vim_vundle(){
+install_vim_vundle()
+{
     VIM_VUNDLE="$HOME/.vim/bundle/Vundle.vim"
     if [[ -x $(command -v vim) && ! -d "$VIM_VUNDLE" ]]; then
         fmt_note "installing vim vundle ..."
@@ -214,37 +200,42 @@ install_vim_vundle(){
     fi
 }
 
-install_update(){
+install_update()
+{
     fmt_note "installing update.sh ..."
     cp "${DOTFILES}/.update.sh" "${DOTFILES}/update.sh"
     chmod +x "${DOTFILES}/update.sh"
     fmt_note "running update.sh ..."
-    DFS_UPDATED_RET=1 ${DOTFILES}/update.sh
-    if [[ $? == 1 ]]; then
+    DFS_UPDATED_RET=85 ${DOTFILES}/update.sh
+    if [[ $? == 85 ]]; then
         fmt_note "dfs updated. re-running install.sh ..."
-        "${DOTFILES}/install.sh" && exit
+        "${DOTFILES}/install.sh" "$ORIGIN_ARGS" && exit
     fi
 }
 
-uninstall_update(){
+uninstall_update()
+{
     fmt_note "removing update.sh ..."
     rm "${DOTFILES}/update.sh"
 }
 
-install(){
-    install_update
+install()
+{
     if [[ "$INSTALL_DEP" == "1" ]]; then install_dependencies; fi
+    install_update
     preinstall_check
     install_crontab
     install_file_content
     install_symlink
+    apost_beacon "dfs.installed"
     # those that won't be uninstalled in the future
     install_tmux_tpm
     install_vim_vundle
     fmt_note "done installing!"
 }
 
-uninstall(){
+uninstall()
+{
     ask_for_yN "do you really want to uninstall?"
     if [[ $? != 1 ]]; then
         fmt_error "aborting this job ..."
@@ -254,9 +245,11 @@ uninstall(){
     uninstall_crontab
     uninstall_file_content
     uninstall_symlink
+    apost_beacon "dfs.uninstalled"
     fmt_note "done uninstalling!"
 }
 
+ORIGIN_ARGS="$@"
 parse_arg "$@"
 FUNC=install
 INSTALL_DEP=0
@@ -267,7 +260,8 @@ for i in ${PARSE_ARG_RET[@]}; do
         -d|--dev ) export DFS_DEV=1 ;;
         -l|--lite ) export DFS_LITE=1 ;;
         -a|--auto ) INSTALL_DEP=1 ;;
-        * ) fmt_fatal "unknown option \"$i\". available: -i, -r, -q, -d, -l, -a" ;;
+        -s|--secure ) export DFS_DEV=0 ;;
+        * ) fmt_fatal "unknown option \"$i\". available: -i, -r, -q, -d, -l, -a, -s" ;;
     esac
 done
 $FUNC
diff --git a/tools/alpine.sh b/tools/alpine.sh
index 0879e84..57f9b2e 100755
--- a/tools/alpine.sh
+++ b/tools/alpine.sh
@@ -1,21 +1,23 @@
 #!/bin/bash
-
 set -e
+THIS_DIR=$( cd "$( dirname "${BASH_SOURCE[0]:-${(%):-%x}}" )" && pwd )
+source "$THIS_DIR/common.sh"
 
 set_mirror()
 {
     MIRROR=${1:-"mirrors.tuna.tsinghua.edu.cn"}
-    MIRROR=${MIRROR//\//\\\/}
-    sed -i "s/dl-cdn.alpinelinux.org/$MIRROR/g" /etc/apk/repositories
+    sed -i "s@dl-cdn.alpinelinux.org@${MIRROR}@g" /etc/apk/repositories
 }
 
 apk_add()
 {
     apk update
-
-    # mass installation
-    apk add zsh git tmux vim curl wget bash python3 py3-pip htop gcc g++ cmake make fzf perl linux-headers bind-tools iputils man-db coreutils util-linux
-    #for i in {fzf,ripgrep}; do apk add $i -y; done
+    # lite
+    apk add zsh bash git tmux vim curl fzf iputils coreutils util-linux
+    # full
+    if [[ -z "$DFS_LITE" ]]; then
+        apk add wget python3 py3-pip htop gcc g++ cmake make perl linux-headers bind-tools man-db
+    fi
 }
 
 set_timezone()
diff --git a/tools/common.sh b/tools/common.sh
index c376518..87fcdfa 100755
--- a/tools/common.sh
+++ b/tools/common.sh
@@ -109,7 +109,7 @@ parse_arg()
     while [[ $# > 0 || -n "$ARG" ]]; do
         if [[ -z "$ARG" ]]; then ARG=$1; shift; fi
         case $ARG in
-            -q*|--quite ) DFS_QUIET=1 ;;
+            -q*|--quite ) export DFS_QUIET=1 ;;
             --* ) PARSE_ARG_RET+=("$ARG") ;;
             -* ) PARSE_ARG_RET+=("${ARG:0:2}") ;;
             *  ) PARSE_ARG_RET+=("$ARG") ;;
@@ -148,10 +148,32 @@ ask_for_Yn()
 
 post_log()
 {
-    python3 "${DOTFILES}/tools/log.py" "[$1] $2: $3"
+    if [[ $# != 3 || -z "$1" || -z "$2" || -z "$3" ]]; then
+        fmt_fatal "usage: post_log <level> <section> <content>"
+    fi
+    "${DOTFILES}/tools/logger.sh" "log" "[$1][$2] $3"
 }
 
-get_os_type() {
+apost_log()
+{
+    post_log "$@" 1>/dev/null &
+}
+
+post_beacon()
+{
+    if [[ $# != 1 || -z "$1" ]]; then
+        fmt_fatal "usage: post_beacon <beacon>"
+    fi
+    "${DOTFILES}/tools/logger.sh" "beacon" "$1"
+}
+
+apost_beacon()
+{
+    post_beacon "$@" 1>/dev/null &
+}
+
+get_os_type()
+{
     local ans="unknown"
     case "$(uname -s)" in
         Darwin*)    ans="MacOS";;
@@ -163,7 +185,8 @@ get_os_type() {
     echo $ans | tr '[:upper:]' '[:lower:]'
 }
 
-get_linux_dist() {
+get_linux_dist()
+{
     local ans="unknown"
     if [ -f /etc/os-release ]; then
         . /etc/os-release
@@ -185,6 +208,15 @@ get_linux_dist() {
     echo $ans | tr '[:upper:]' '[:lower:]'
 }
 
+get_os_name()
+{
+    local ans=$(get_os_type)
+    if [[ "$ans" == "linux" ]]; then
+        ans=$(get_linux_dist)
+    fi
+    echo $ans
+}
+
 # if bash-ed, else source-d
 if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
     $1 "${@:2}"
diff --git a/tools/log.py b/tools/log.py
deleted file mode 100644
index d55f0bb..0000000
--- a/tools/log.py
+++ /dev/null
@@ -1,73 +0,0 @@
-#!/usr/bin/env python3
-import os, uuid, socket, argparse, logging
-
-namespace = uuid.UUID("cc23b903-1993-44eb-9c90-48bd841eeac3")
-logging.basicConfig(level=logging.INFO, format="[%(filename)s:%(lineno)d][%(levelname)s] %(message)s")
-
-try:
-    import requests
-except ImportError:
-    logging.critical("Please install requests module")
-    exit(1)
-
-
-def get_uuid_raw() -> str:
-    possible_uuid_files = [
-        "/var/lib/dbus/machine-id",
-        "/etc/machine-id",
-        os.path.join(os.path.expanduser('~'), ".config/dotfiles/uuid"),
-    ]
-    for i in possible_uuid_files:
-        if os.path.exists(i):
-            with open(i, "r") as f:
-                return f.read().strip()
-    if not os.path.exists(os.path.dirname(possible_uuid_files[-1])):
-        os.makedirs(os.path.dirname(possible_uuid_files[-1]))
-    with open(possible_uuid_files[-1], 'w') as f:
-        ans = str(uuid.uuid4())
-        f.write(ans)
-        return ans
-
-
-def get_uuid() -> str:
-    return str(uuid.uuid5(namespace, get_uuid_raw()))
-
-
-def get_hostname() -> str:
-    ans = socket.gethostname()
-    if '-' not in ans:
-        ans += "-ibd-ink"
-    return ans
-
-
-def post_log(url:str, hostname:str, uuid:str, content:str):
-    ans = requests.post(url, params={"hostname": hostname, "uuid": uuid}, data=content)
-    return ans
-
-
-if __name__ == "__main__":
-    parser = argparse.ArgumentParser(description="post log to server")
-    parser.add_argument("-u", "--url", help="url to post to", default="https://api.beardic.cn/post-log")
-    parser.add_argument("content")
-    args = parser.parse_args()
-    url = args.url
-    content = args.content
-    hostname = get_hostname()
-    uuid = get_uuid()
-    content=content.strip()
-    if not content:
-        logging.error("empty log content")
-        exit(0)
-    resp = post_log(url, hostname, uuid, content)
-    if resp.status_code == 200:
-        logging.info("200 ok")
-        exit(0)
-    elif resp.status_code == 403:
-        logging.warning("403 forbidden")
-        logging.info("you may need to register your hostname and uuid")
-        logging.info(f"hostname: {hostname}, uuid: {uuid}")
-        exit(0)
-    else:
-        logging.critical("unknown error")
-        logging.error(f"{resp.status_code}: {resp.text}")
-        exit(1)
diff --git a/tools/logger.sh b/tools/logger.sh
new file mode 100755
index 0000000..1fc0342
--- /dev/null
+++ b/tools/logger.sh
@@ -0,0 +1,100 @@
+#!/bin/bash
+
+set -e
+THIS_DIR=$( cd "$( dirname "${BASH_SOURCE[0]:-${(%):-%x}}" )" && pwd )
+source "$THIS_DIR/common.sh"
+
+if [[ -x $(command -v hostname) ]]; then
+    hostname=$(hostname)
+elif [[ -x $(command -v uname) ]]; then
+    hostname=$(uname -n)
+elif [[ -x $(command -v hostnamectl) ]]; then
+    hostname=$(hostnamectl --static)
+elif [[ -n "$HOSTNAME" ]]; then
+    hostname=$HOSTNAME
+elif [[ -f /proc/sys/kernel/hostname ]]; then
+    hostname=$(cat /proc/sys/kernel/hostname)
+elif [[ -f /etc/hostname ]]; then
+    hostname=$(cat /etc/hostname)
+else
+    fmt_fatal "unable to get hostname"
+fi
+
+init_uuid()
+{
+    if  [[ -f ~/.config/dotfiles/uuid ]]; then
+        uuid=$(cat ~/.config/dotfiles/uuid)
+    else
+        if [[ -x $(command -v uuidgen) ]]; then
+            uuid=$(uuidgen)
+        elif [[ -f /proc/sys/kernel/random/uuid ]]; then
+            uuid=$(cat /proc/sys/kernel/random/uuid)
+        else
+            fmt_fatal "unable to generate uuid"
+        fi
+        mkdir -p ~/.config/dotfiles
+        echo "$uuid" > ~/.config/dotfiles/uuid
+    fi
+}
+
+post_beacon()
+{
+    local beacon_type=$1
+    if [[ -z "$beacon_type" ]]; then
+        fmt_fatal "beacon type is required"
+    fi
+    resp=$(curl -sSL -X POST "https://api.beardic.cn/post-beacon?hostname=$hostname&beacon=$beacon_type")
+    if grep -q "200" <<< "$resp"; then
+        echo $resp
+    else
+        echo $resp >&2
+        fmt_fatal "error posting beacon"
+    fi
+}
+
+post_log()
+{
+    local log_content=$1
+    if [[ -z "$log_content" ]]; then
+        fmt_fatal "log content is required"
+    fi
+    init_uuid
+    resp=$(curl -sSL -X POST -H "Content-Type: text/plain" -d "$1" "https://api.beardic.cn/post-log?hostname=$hostname&uuid=$uuid")
+    if grep -q "200" <<< "$resp"; then
+        echo $resp
+    elif grep -q "403" <<< "$resp"; then
+        echo $resp >&2
+        fmt_error "error posting log: authentification failed"
+        fmt_info "try to register you hostname and uuid"
+        fmt_info "hostname: $hostname"
+        fmt_info "uuid: $uuid"
+    else
+        echo $resp >&2
+        fmt_fatal "error posting log"
+    fi
+}
+
+print_help()
+{
+    fmt_info "usage: $0 <beacon|log> <beacon_type|log_content>"
+}
+
+if [[ $# != 2 ]]; then
+    print_help >&2
+    exit 1
+fi
+
+case "$1" in
+    -h|--help)
+        fmt_info "usage: $0 <beacon|log> <beacon_type|log_content>"
+        ;;
+    beacon)
+        post_beacon "$2"
+        ;;
+    log)
+        post_log "$2"
+        ;;
+    *)
+        fmt_fatal "invalid argument"
+        ;;
+esac
diff --git a/tools/macos.sh b/tools/macos.sh
new file mode 100755
index 0000000..fca9e2a
--- /dev/null
+++ b/tools/macos.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+set -e
+THIS_DIR=$( cd "$( dirname "${BASH_SOURCE[0]:-${(%):-%x}}" )" && pwd )
+source "$THIS_DIR/common.sh"
+
+brew_install()
+{
+    brew update
+    brew install git zsh curl tmux vim util-linux
+}
+
+router()
+{
+    case $1 in
+        brew-install ) brew_install ;;
+        *            ) echo unknown command "$1". available: brew-install;;
+    esac
+}
+
+router $@
diff --git a/tools/msys2.sh b/tools/msys2.sh
index 48cc70d..350a789 100755
--- a/tools/msys2.sh
+++ b/tools/msys2.sh
@@ -1,6 +1,7 @@
 #!/bin/bash
-
 set -e
+THIS_DIR=$( cd "$( dirname "${BASH_SOURCE[0]:-${(%):-%x}}" )" && pwd )
+source "$THIS_DIR/common.sh"
 
 set_mirror()
 {
@@ -13,7 +14,12 @@ set_mirror()
 pacman_S()
 {
     pacman -Syu
-    pacman -S tmux git zsh curl vim wget base-devel mingw-w64-x86_64-toolchain make cmake gcc zip unzip python3 python3-pip man-pages-posix
+    # lite
+    pacman -S tmux git zsh bash curl vim
+    # full
+    if [[ -z "$DFS_LITE" ]]; then
+        pacman -S wget base-devel mingw-w64-x86_64-toolchain make cmake gcc zip unzip python3 python3-pip man-pages-posix
+    fi
 }
 
 router()
diff --git a/tools/test.zsh b/tools/test.zsh
index 634f07e..c1eaa05 100644
--- a/tools/test.zsh
+++ b/tools/test.zsh
@@ -17,6 +17,7 @@ grep -q ".zshrc2" ~/.zshrc
 # check scripts and functions
 dfs version
 dfs log 1
+dfs beacon gh.ci
 z ~
 test ~ -ef "$(pwd)"
 dogo
diff --git a/tools/ubuntu.sh b/tools/ubuntu.sh
index c9309f9..88917b6 100755
--- a/tools/ubuntu.sh
+++ b/tools/ubuntu.sh
@@ -1,24 +1,25 @@
 #!/bin/bash
-
 set -e
+THIS_DIR=$( cd "$( dirname "${BASH_SOURCE[0]:-${(%):-%x}}" )" && pwd )
+source "$THIS_DIR/common.sh"
 
 set_mirror()
 {
     MIRROR=${1:-"mirrors.tuna.tsinghua.edu.cn"}
-    MIRROR=${MIRROR//\//\\\/}
     sed -i "s@http://.*archive.ubuntu.com@https://${MIRROR}@g" /etc/apt/sources.list
     sed -i "s@http://.*security.ubuntu.com@https://${MIRROR}@g" /etc/apt/sources.list
 }
 
 apt_install()
 {
-    # basic packages
-    apt-get update
-    for i in {man-db,vim,ca-certificates}; do apt-get install $i -y; done
-
-    # mass installation
-    apt-get install git tmux zsh curl wget dialog net-tools dnsutils netcat traceroute sudo python3 python3-pip cron inetutils-ping openssh-client openssh-server htop gcc g++ cmake make zip less bsdmainutils
-    for i in {fzf,ripgrep}; do apt-get install $i -y; done
+    apt-get update -y
+    # lite
+    apt-get install -y git zsh bash tmux vim curl inetutils-ping less bsdmainutils
+    # full
+    if [[ -z "$DFS_LITE" ]]; then
+        apt-get install wget dialog net-tools dnsutils netcat traceroute sudo python3 python3-pip cron openssh-client openssh-server htop gcc g++ cmake make zip
+        for i in {fzf,ripgrep,man-db}; do apt-get install -y $i; done
+    fi
 }
 
 set_timezone()