利用openssl生成随机密码

#!/bin/bash
#Creat Rand passowd by openssl.
echo -n "How many rand passwd do you need: ";read var1    #输入生成密码个数。
echo -n "Input the longth of passwd: ";read var2          #输入密码长度。
for ((i=1;i<=$var1;i=i+1))
do
openssl rand $var2 -base64 >> Randpasswd.txt          #生成密码并保存到Randpasswd.txt文件中。
done
echo "Creat Rand passwod successfully in "Randpasswd.txt"."