这篇文章主要功能为自动删除VSFTPD虚拟用户脚本，有需要的朋友可以参考下。（请结合VSFTPD创建虚拟用户脚本（可批量）此文章脚本使用）
脚本内容如下：
#!/bin/bash
#Date：2017-5-20 14:08:55
#Author Blog:
# https://www.yangxingzhen.com
#Author WeChat：
# 微信公众号：小柒博客
#Author mirrors site:
# https://mirrors.yangxingzhen.com
#About the Autho
# BY：YangXingZhen
# Mail：xingzhen.yang@yangxingzhen.com
#Batch deletion of vsftpd virtual users（支持删除单个用户跟多个用户）
#This script applies to Centos 6.x and Centos 7.x
FTP_DIR="/etc/vsftpd"
USER="$*"
if [ $# -eq 0 ];then
echo -e " 33[33m Please enter the username that needs to be deleted 33[0m"
echo -e " 33[33m Usage: sh $0 {admin|admin123|help} 33[0m"
exit 0
elif [[ ${USER} == "help" ]];then
echo -e " 33[33m Please enter the username that needs to be deleted 33[0m"
echo -e " 33[33m Usage: sh $0 {admin|admin123|help} 33[0m"
exit 0
fi
for i in `echo ${USER}`
do
grep -qwc "$i" ${FTP_DIR}/ftpusers.txt
if [ $? -eq 0 ];then
sed -i "/^${i}$/, 1"d ${FTP_DIR}/ftpusers.txt
sed -i "/^${i}$/"d ${FTP_DIR}/vsftpd.chroot_list
rm -rf /home/ftpuser/$i
rm -rf ${FTP_DIR}/vsftpd_user_conf/$i
rm -rf ${FTP_DIR}/vsftpd_login.db
db_load -T -t hash -f ${FTP_DIR}/ftpusers.txt ${FTP_DIR}/vsftpd_login.db
chmod 700 ${FTP_DIR}/vsftpd_login.db
echo "`date %Y/%m/%d-%T` $i Delete success" >> ${FTP_DIR}/delete_list.txt
echo -e " 33[32m User $i deleting success,Please check the record file >> ${FTP_DIR}/delete_list.txt 33[0m"
else
echo -e " 33[32m User $i deleting Fail,This user does not exist 33[0m"
fi
done
