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 $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！