很多时候我们不能一直守护在自己的电脑旁边，而且有些文件并不想让别人知道。那么这时候来个锁屏，是再合适不过的了。今天分享一个自制的锁屏工具，如下。

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 $inforead mypasswordecho "Screen will locked in 7 seconds!"sleep 7clear#!/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 $inforead mypasswordecho "Screen will locked in 7 seconds!"sleep 7clear#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dotrapper #调用函数printf "\n\n\n\n\n\n\n\n\t\t\tPlease enter unlock code:" | cowsaystty -echo #屏蔽输入的字符read inputcase $input in$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 3clearcontinue ;; #否则,继续循环esacdone

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！