vsftp_root.sh

#!/bin/bash
#使用方法：1、安装 （命令执行：sh xxx.sh）
#使用方法：2、添加ftp用户 （命令执行：sh xxx.sh add）
#使用方法：3、卸载vsftpd （命令执行：sh xxx.sh uninstall）
#本脚本适用于Centos6平台，不适用于Centos7平台
Stack=$1
if [ "${Stack}" = "" ]; then
    Stack="install"
else
    Stack=$1
fi

install_vsftp()
{
	echo "#######################"
	echo -e "\033[33mUsage: $0 {install|add|uninstall}\033[0m"
	echo -e "\033[33msh $0 (default:install)\033[0m"
	echo -e "\033[33msh $0 add (Add FTP user)\033[0m"
	echo -e "\033[33msh $0 uninstall (Uninstall FTP)\033[0m"
	echo "#######################"
	A=`head -c 500 /dev/urandom | tr -dc a-zA-Z | tr [a-z] [A-Z]|head -c 1`
	B=`head -c 500 /dev/urandom | tr -dc a-z0-9A-Z | head -c 6`
	C=`echo $RANDOM|cut -c 2`
	rpm -q vsftpd
	if [ "$?" -eq "0" ]; then
	echo "You have to install VSFTPD!"
	else
	netstat -ntulp |grep -w 21
	if [ "$?" -eq "0" ]; then
	echo "Other FTP is already installed"
	else
	read -p "The FTP access directory(default:/home): " directory
	if [ "${directory}" != "" ]; then
		directorys="${directory}"
		else
		directorys="/home"
	fi
	read -p "Please enter the FTP user: " ftp_user
	read -p "Enter the FTP password(default:$A$B$C): " ftp_pass
	if [ "${ftp_pass}" != "" ]; then
		ftp_passa="${ftp_pass}"
		else
		ftp_passa="$A$B$C"
	fi
	yum -y install vsftpd
	if [ "$?" -eq "0" ]; then
	if [ -d ${directorys} ]; then
	chmod -R 777 ${directorys}
	fi
	useradd -d ${directorys} -g ftp -s /sbin/nologin ${ftp_user}
	echo "${ftp_passa}" | passwd --stdin ${ftp_user} > /dev/null
	sed -i 's/^anonymous_enable=YES/anonymous_enable=NO/g' /etc/vsftpd/vsftpd.conf
	sed -i 's/^#chroot_local_user=YES/chroot_local_user=YES/g' /etc/vsftpd/vsftpd.conf
	sed -i 's/^#chroot_list_enable=YES/chroot_list_enable=YES/g' /etc/vsftpd/vsftpd.conf
	echo "userdel ${ftp_user}" >> /etc/vsftpd/user_list.sh
	echo  "" > /etc/vsftpd/chroot_list
	chkconfig vsftpd on
	service vsftpd restart
	echo "###################################"
	echo "FTP user:${ftp_user}"
	echo "Ftp password:${ftp_passa}"
	echo "The FTP directory:${directorys}"
	echo "-----------------------------------"
	else
	echo "VSFTPD installation failed!"
	fi
	fi
	fi
}

add_ftp()
{
	A=`head -c 500 /dev/urandom | tr -dc a-zA-Z | tr [a-z] [A-Z]|head -c 1`
	B=`head -c 500 /dev/urandom | tr -dc a-z0-9A-Z | head -c 6`
	C=`echo $RANDOM|cut -c 2`
	read -p "The FTP access directory(Such as:/home): " directory
	if [ "${directory}" != "" ]; then
		directorys="${directory}"
		else
		directorys="/home"
	fi
	read -p "Please enter the FTP user: " ftp_user
	read -p "Enter the FTP password(default:$A$B$C): " ftp_pass
	if [ -d ${directorys} ]; then
	chmod -R 777 ${directorys}
	fi
	useradd -d ${directorys} -g ftp -s /sbin/nologin ${ftp_user}
	if [ "${ftp_pass}" != "" ]; then
		ftp_passa="${ftp_pass}"
		else
		ftp_passa="$A$B$C"
	fi
	echo "${ftp_passa}" | passwd --stdin ${ftp_user} > /dev/null
	echo "userdel ${ftp_user}" >> /etc/vsftpd/user_list.sh
	if [ -d ${directorys} ]; then
	chmod -R 777 ${directorys}
	fi
	echo "###################################"
	echo "FTP user:${ftp_user}"
	echo "Ftp password:${ftp_passa}"
	echo "The FTP directory:${directorys}"
	echo "-----------------------------------"

}

uninstall_ftp()
{

yum -y remove vsftpd*
sh /etc/vsftpd/user_list.sh
echo "" > /etc/vsftpd/user_list.sh
}

case "${Stack}" in
    install)
        install_vsftp
        ;;
    add)
		add_ftp
        ;;
	uninstall)
		uninstall_ftp
        ;;
    *)
       echo "Usage: $0 {install|add|uninstall}"
        ;;
esac