#! /bin/bash

read -p "请输入你要生成的用户个数：" usernumb
###清空文件内容
:>./mypasswd.txt

 ###生成账户密码存入文档
for ((i=1;i<=$usernumb;i++))
do
echo "lsm-$RANDOM:$RANDOM">>./mypasswd.txt
done

###添加账户
username=$(cut -d ':' -f 1 ./mypasswd.txt)
password=$(cut -d ':' -f 2 ./mypasswd.txt)
usernamearr=($username)
passwordarr=($password)
i=0
for user in ${usernamearr[*]}
do
	r=`grep "^$user:" /etc/passwd |wc -l`
	if [ $r -eq 1 ]
	then
		echo " $user is exist"
	else
		sudo useradd -m $user
		echo -e "${passwordarr[((i))]}\n${passwordarr[((i++))]}"|sudo passwd $user
	fi
done
echo -e "\e[1;31m请到mypassword.txt文件查看新添加的用户名密码\e[0m"
echo -e "\e[1;31m你要删除刚刚添加的用户吗?[Y/N]\e[0m"
read choose
if [ choose=="Y" -o choose=="y" ]
then
	for user in ${usernamearr[*]}
	do
		sudo userdel -f $user
	done
	echo "删除成功！"
fi