diff --git a/backup/README.md b/backup/README.md
index 91f78fb..7402ffe 100644
--- a/backup/README.md
+++ b/backup/README.md
@@ -1,3 +1,142 @@
+
+- [1. 服务器备份脚本](#1-服务器备份脚本)
+- [2. online.net ftp 备份脚本](#online.net ftp 备份脚本)
+
+# 服务器备份脚本
+
+指定要备份的文件和目录列表， 使用 `zip` 加密备份文件到指定目录，如 `Dropbox` 同步目录。压缩文件密码为随机密码，会通过 `gmail` 发送到指定邮箱。
+ 
+## 下载
+ 
+```
+mkdir /root/bin
+cd /root/bin
+ 
+wget https://raw.githubusercontent.com/xdtianyu/scripts/master/backup/backup.sh
+wget https://raw.githubusercontent.com/xdtianyu/scripts/master/backup/backup.conf
+ 
+chmod +x backup.sh
+```
+ 
+## 依赖
+ 
+需要安装 `zip` 用来压缩文件， `sendemail` 用来发送密码通知邮件。
+ 
+```
+apt-get install zip libnet-ssleay-perl libio-socket-ssl-perl sendemail
+```
+ 
+## 配置
+ 
+修改 `backup.conf` 文件，主要修改
+ 
+**邮件配置**
+ 
+```
+EMAIL="receiver@gmail.com"
+SENDER="sender@gmail.com"
+SENDER_PASSWD="sender_password"
+```
+ 
+注意如果 `sender@gmail.com` 启用了两部验证，则应该使用 [应用专用密码](https://security.google.com/settings/security/apppasswords)
+ 
+**文件列表配置**
+ 
+```
+FILES=(
+    "/root/.vimrc"
+    "/root/.bashrc"
+    "/root/.my.cnf"
+    "/root/.screenrc"
+    "/root/.ssh/config"
+)
+```
+ 
+**目录列表配置**
+ 
+```
+DIRS=(
+    "/etc"
+    "/root/bin"
+    "/root/bashfiles"
+    "/var/www"
+    "/home/git"
+)
+```
+ 
+**忽略目录中的文件或文件夹**
+ 
+注意如果备份时要跳过目录中的文件或子目录，可以在目标目录中添加一个 `exclude.lst` 文件，如 `/var/www/exclude.lst` 文件内容参考如下
+ 
+```
+*/10meg.test
+*/cache/*
+/var/www/zips/*
+/var/www/downloads/*
+/var/www/share/*
+/var/www/wordpress/dl/*
+/var/www/wordpress/mp3/*
+/var/www/wordpress/d/*
+/var/www/wordpress/wp-content/languages/*
+/var/www/wordpress/wp-content/plugins/*
+/var/www/wordpress/wp-content/themes/*
+/var/www/wordpress/wp-content/uploads/2011/*
+```
+ 
+**备份所有文件**
+ 
+如果某次备份要备份所有的文件，即忽略 `exclude.lst` 文件，可以添加 `all` 参数运行
+ 
+```
+/root/bin/backup.sh all
+```
+ 
+**备份 mysql 配置**
+ 
+```
+BACKUP_MYSQL=true
+```
+ 
+如果启用 `mysql` 备份，  则需要添加 `/root/.my.cnf` 文件，内容示例如下
+ 
+```
+[mysqldump]
+user=root
+password=123456
+```
+ 
+**备份压缩配置**
+ 
+```
+ZIP_COMPRESS=true
+```
+ 
+如果不启用压缩，则会以存储模式压缩文件和文件夹。
+ 
+**备份保存路径**
+ 
+```
+TARGET_DIR="/root/Dropbox"
+```
+ 
+备份完成后会移动到 `TARGET_DIR`， 示例中为 `dropbox` 的默认同步路径，可以将文件同步到 `dropbox` 服务器。安装 `dropbox` 请参考 [https://www.dropbox.com/install-linux](https://www.dropbox.com/install-linux)
+ 
+**日志路径**
+ 
+```
+LOG_FILE="/var/log/backup.log"
+```
+ 
+会将备份过程中的主要操作输出到日志中。
+ 
+ 
+## cron 定时任务
+ 
+```
+10 */4 * * * bash /root/bin/backup.sh >/dev/null 2>&1
+30 02 * * 0 bash /root/bin/backup.sh all >>/dev/null 2>&1
+```
+
 # online.net ftp 备份脚本
 
 
diff --git a/backup/backup.conf b/backup/backup.conf
new file mode 100644
index 0000000..c359ae6
--- /dev/null
+++ b/backup/backup.conf
@@ -0,0 +1,35 @@
+## Email configuration
+
+EVENT="Server schedule backup"
+EMAIL="receiver@gmail.com"
+SENDER="sender@gmail.com"
+SENDER_PASSWD="sender_password"
+SMTP_SERVER="smtp.gmail.com:587"
+
+
+## backup settings
+
+BACKUP_MYSQL=true
+ZIP_COMPRESS=true
+TARGET_DIR="/root/Dropbox"
+LOG_FILE="/var/log/backup.log"
+
+
+## backup files and dirs
+
+FILES=(
+    "/root/.vimrc"
+    "/root/.bashrc"
+    "/root/.my.cnf"
+    "/root/.screenrc"
+    "/root/.ssh/config"
+)
+
+DIRS=(
+    "/etc"
+    "/root/bin"
+    "/root/bashfiles"
+    "/var/www"
+    "/home/git"
+)
+
diff --git a/backup/backup.sh b/backup/backup.sh
new file mode 100755
index 0000000..6aa22ad
--- /dev/null
+++ b/backup/backup.sh
@@ -0,0 +1,116 @@
+#!/bin/bash
+
+ALL=$1
+
+TIME=$(date +%F-%H-%M-%S)
+PASSWD=$(tr -cd '[:alnum:]' < /dev/urandom | fold -w30 | head -n1)
+
+CONF_FILE="$(dirname $0)/backup.conf"
+
+if [ -f "$CONF_FILE" ];then
+    source "$CONF_FILE"
+else
+    echo "$CONF_FILE not exist."
+    exit -1
+fi
+
+if [ ! -d "$TARGET_DIR" ]; then
+    echo "Error, directory $TARGET_DIR not found." | tee -a "$LOG_FILE"
+    exit -1
+fi
+
+ZIP="zip -P $PASSWD"
+
+if [ "$ZIP_COMPRESS" != true ];then
+    ZIP="zip -0 -P $PASSWD"
+fi
+
+# create tmp dir for archive files and dirs
+
+cd /opt
+
+if [ -d 'tmp' ]; then
+    rm -r tmp
+fi
+
+mkdir tmp
+cd tmp
+
+# remove old backup files
+
+if [ ! $(find "$TARGET_DIR" -name \*.zip |wc -l) == 0 ]; then
+    rm "$TARGET_DIR"/*.zip
+fi
+
+# backup files
+
+if [ -f "$TARGET_DIR/backup_files.zip" ]; then
+    rm "$TARGET_DIR/backup_files.zip"
+fi
+
+echo "$(date) --> backup files: ${FILES[@]}" | tee -a "$LOG_FILE"
+$ZIP "backup_files.zip" "${FILES[@]}"
+mv "backup_files.zip" "$TARGET_DIR/backup-$TIME-backup_files.zip"
+
+# backup dirs
+
+for dir in "${DIRS[@]}"
+do
+    target="${dir//\//_}"
+    target="${target:1}"
+
+    if [ -f "$TARGET_DIR/$target.zip" ]; then
+        rm "$TARGET_DIR/$target.zip"
+    fi
+
+    if [ -d "$dir" ]; then
+        echo "$(date) --> backup: $dir" | tee -a "$LOG_FILE"
+        if [ "$ALL" = "all" ] || [ ! -f "$dir/exclude.lst" ]; then
+            $ZIP -r --symlinks "$target.zip" "$dir"
+        else
+            $ZIP -r --symlinks "$target.zip" "$dir" -x@"$dir/exclude.lst"
+        fi
+        mv "$target.zip" "$TARGET_DIR/backup-$TIME-$target.zip"
+    else 
+        echo "$(date) --> $dir not exist." | tee -a "$LOG_FILE"
+    fi
+done
+
+# backup mysql
+
+if [ "$BACKUP_MYSQL" == "true" ]; then
+
+    echo "$(date) --> backup: mysql" | tee -a "$LOG_FILE"
+
+    mysqldump --all-databases > mysql.sql
+    $ZIP mysql.zip mysql.sql
+    rm mysql.sql
+
+    mv "mysql.zip" "$TARGET_DIR/backup-$TIME-mysql.zip"
+fi
+
+# clean tmp dir
+
+cd /opt
+rm -r tmp
+
+#cp /root/Dropbox/*.zip /home/box/backup
+
+# curl -s https://www.xdty.org/mail.php -X POST -d "event=$EVENT ($TIME|$PASSWD)&name=$NAME&email=$EMAIL" &
+
+# echo $PASSWD
+
+# send email
+
+if [ "$ALL" = "all" ]; then
+    EVENT="$EVENT(all)"
+fi
+
+sendemail -f "${SENDER%@*} <$SENDER>" \
+    -u "$EVENT event notify" \
+    -t "$EMAIL" \
+    -s "$SMTP_SERVER" \
+    -o tls=yes \
+    -xu "$SENDER" \
+    -xp "$SENDER_PASSWD" \
+    -m "$EVENT completed ($TIME|$PASSWD) at $(date +'%Y-%m-%d %H:%M:%S')"