Linux Shell 脚本练习
实验内容：
1.模拟 linux 登录 shell
#/bin/bash
echo -n "login:"
read name
echo -n "password:"
read passwd
if [ $name = "cht" -a $passwd = "abc" ];then
echo "the host and password is right!"
else echo "input is error!"
fi
2.比较两个数大小
#/bin/bash
echo "please enter two number"
read a
read b
if test $a -eq $b
then echo "NO.1 = NO.2"
elif test $a -gt $b
then echo "NO.1 > NO.2"
else echo "NO.1 < NO.2"
fi
3.查找/root/目录下是否存在该文件
#/bin/bash
echo "enter a file name:"
read a
if test -e /root/$a
then echo "the file is exist!"
else echo "the file is not exist!"
fi
4.for 循环的使用
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