diff --git a/.zshrc2 b/.zshrc2
index 5af6eda..85a690a 100644
--- a/.zshrc2
+++ b/.zshrc2
@@ -169,6 +169,7 @@ 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/tools/common.sh b/tools/common.sh
index c376518..4a1ac94 100755
--- a/tools/common.sh
+++ b/tools/common.sh
@@ -148,7 +148,12 @@ ask_for_Yn()
 
 post_log()
 {
-    python3 "${DOTFILES}/tools/log.py" "[$1] $2: $3"
+    "${DOTFILES}/tools/logger.sh" "log" "[$1][$2] $3"
+}
+
+post_beacon()
+{
+    "${DOTFILES}/tools/logger.sh" "beacon" "$1"
 }
 
 get_os_type() {
diff --git a/tools/log.py b/tools/log.py
deleted file mode 100644
index a2b5e7e..0000000
--- a/tools/log.py
+++ /dev/null
@@ -1,66 +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 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 = socket.gethostname()
-    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..1986b1b
--- /dev/null
+++ b/tools/logger.sh
@@ -0,0 +1,95 @@
+#!/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()
+{
+    local raw_uuid
+    if [[ -f /var/lib/dbus/machine-id ]]; then
+        raw_uuid=$(cat /var/lib/dbus/machine-id)
+    elif [[ -f /etc/machine-id ]]; then
+        raw_uuid=$(cat /etc/machine-id)
+    elif [[ -f ~/.config/dotfiles/uuid ]]; then
+        raw_uuid=$(cat ~/.config/dotfiles/uuid)
+    else
+        mkdir -p ~/.config/dotfiles
+        raw_uuid=$(uuidgen)
+        echo "$raw_uuid" > ~/.config/dotfiles/uuid
+    fi
+    uuid=$(uuidgen -n "cc23b903-1993-44eb-9c90-48bd841eeac3" -s -N "$raw_uuid")
+}
+
+post_beacon()
+{
+    local beacon_type=$1
+    if [[ -z "$beacon_type" ]]; then
+        fmt_fatal "beacon type is required"
+    fi
+    exec 9>&1
+    resp=$(curl -sSL -X POST "https://api.beardic.cn/post-beacon?hostname=$hostname&beacon=$beacon_type" | tee >(cat - >&9))
+    (grep -q "200" <<< "$resp") || fmt_fatal "error posting beacon"
+}
+
+post_log()
+{
+    local log_content=$1
+    if [[ -z "$log_content" ]]; then
+        fmt_fatal "log content is required"
+    fi
+    init_uuid
+    exec 9>&1
+    resp=$(curl -sSL -X POST -H "Content-Type: text/plain" -d "$1" "https://api.beardic.cn/post-log?hostname=$hostname&uuid=$uuid" | tee >(cat - >&9))
+    if ! grep -q "200" <<< "$resp"; then
+        if grep -q "403" <<< "$resp"; then
+            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
+            fmt_fatal "error posting log"
+        fi
+    fi
+}
+
+print_help()
+{
+    fmt_info "usage: $0 <beacon|log> <beacon_type|log_content>"
+}
+
+if [[ $# != 2 ]]; then
+    print_help
+    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