批量添加用户

#!/bin/bash

i=1
while [ $i -le 20 ]
do
useradd stu$i
echo "123456" | passwd --stdin stu$i &> /dev/null
i=$(($i+1))
done

# 删除用户

#!/bin/bash
# 批量删除用户
user=$(cat /etc/passwd | grep "/bin/bash" | grep -v "root"|grep -v "mysql"|cut -d ":" -f 1)
for u in $user
do
userdel -r $u
done