准备
•操作系统 : 我这里是ElementaryOS虚拟机 + XShell 远程登录工具
•Shell语言 ： 我使用的是默认的Bash Shell
•其他小工具 :
◦fortune：系统随机的从语库中选出一句英文成语。
◦cowsay : 在终端界面上显示出一个奶牛的语句框，配合管道连接上fortune，效果完美！
代码
#!/bin/bash
#scriptname:locktty
#writed by :Marksinoberg
#description : just for protecting our message when we leave away. And we can set the password every time.
reset;clear #清除屏幕
info="Please input the password you will use later!"
cowsay $info
read mypassword
echo "Screen will locked in 7 seconds!"
sleep 7
clear
#!/bin/bash
#scriptname:locktty
#writed by :javalee
#script start...
reset;clear #清除屏幕
info="Please input the password you will use later!"
cowsay $info
read mypassword
echo "Screen will locked in 7 seconds!"
sleep 7
clear
#加上这个倒记时的小东东,;)
trapper () { #建立个函数
trap ' ' 2 3 20 #忽略CTRL+C CTRL+\ CTRL+Z信号
}
while : #进入死循环
do
trapper #调用函数
printf "\n\n\n\n\n\n\n\n\t\t\tPlease enter unlock code:" | cowsay
stty -echo #屏蔽输入的字符
read input
case $input in
$mypassword)
printf "\t\t Hello $USER,Today is $(date +%T)\n"
stty echo
break ;; #输入正确,挑出循环回到命令行
*)echo "Do not check my files,please! See as follows:"
sleep 3
clear
continue ;; #否则,继续循环
esac
done
运行演示
程序运行开始：
mark@mark:~/temp/myscripts$ ./lockscreen.sh
______________________________________
/ Please input the password you \
\ will use later! /
————————————–
\ ^__^
\ (oo)\_______
(__)\ )\/\
||—-w |
|| ||
123
Screen will locked in 7 seconds!
由于静态文本没办法显示程序执行过程中的动态效果，所以直接看解锁界面吧
当我们输入不正确的密码的时候，系统会提示输入错误，以及一个幽默的“警告”
___________________________
/ \
\ Please enter unlock code: /
—————————
\ ^__^
\ (oo)\_______
(__)\ )\/\
||—-w |
|| ||
Do not check my files,please! See as follows:
_________________________________________
/ Q: Why is it that the more accuracy you \
| demand from an interpolation |
| |
| function, the more expensive it becomes |
| to compute? A: That’s the Law of Spline |
\ Demand. /
—————————————–
\ ^__^
\ (oo)\_______
(__)\ )\/\
||—-w |
|| ||
当我们密码输入正确的时候，如下：
___________________________
/ \
\ Please enter unlock code: /
—————————
\ ^__^
\ (oo)\_______
(__)\ )\/\
||—-w |
|| ||
Hello mark,Today is 06:35:05
结语
代码还是很简单的，仅仅用到了shell脚本语法的几个小命令。希望我这个脚本能抛砖引玉，打开你的思路，做出更好的锁屏小脚本！
