linux下添加vsftpd虚拟用户的shell脚本

#!/bin/bash
#this is a script for add ftpusers
while : ;do
if [ -z $user ]; then
read -p "please enter your ftp username:" user
else
while : ;do
if [ $(echo $pw |wc -c) -le 12 ]; then
read -p "please enter your ftp password(请输入密码，12位以上的任意字符):" pw
else
sed -i '$a'$user'n'$pw'' /etc/vsftpd/vuser.txt
db_load -T -t hash -f /etc/vsftpd/vuser.txt /etc/vsftpd/vuser.db
touch /etc/vsftpd/user_dir/$user
while : ;do
if [ "$(echo $local_root | cut -c 1-9)" != "/data/www" ]; then
read -p "please enter ftp home directory(请输入全路径，以/data/www开头):" local_root
else
echo "local_root=$local_root" >> /etc/vsftpd/user_dir/$user
while : ;do
if [ "$permit" != "upload" -a "$permit" != "ro" -a "$permit" != "rw" ]; then
read -p "please enter ftp user permit(upload|ro|rw):" permit
else
if [ $permit = "upload" ]; then
sed -i '$aanon_upload_enable=YESnanon_mkdir_write_enable=YES' /etc/vsftpd/user_dir/$user
echo "the $user permit is $permit,thanks for use scripts"
fi
if [ $permit = "ro" ]; then
echo "the $user permit is $permit,thanks for use scripts"
fi
if [ $permit = "rw" ]; then
sed -i '$aanon_upload_enable=YESnanon_mkdir_write_enable=YESnanon_other_write_enable=YES' /etc/vsftpd/user_dir/$user
echo "the $user permit is $permit,thanks for use scripts"
fi
exit
fi
done
fi
done
fi
done
fi
done