很多時候我們不能一直守護在自己的電腦旁邊，而且有些文件并不想讓別人知道。那么這時候來個鎖屏，是再合適不過的了。今天分享一個自制的鎖屏工具，如下。

準備
 •操作系統 : 我這里是ElementaryOS虛擬機 + XShell 遠程登錄工具
 •Shell語言 ： 我使用的是默認的Bash Shell
 •其他小工具 : 
        ?fortune：系統隨機的從語庫中選出一句英文成語。
        ?cowsay : 在終端界面上顯示出一個奶牛的語句框，配合管道連接上fortune，效果完美！

 代碼

#!/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#加上這個倒記時的小東東,;)trapper () { #建立個函數trap ' ' 2 3 20 #忽略CTRL+C CTRL+/ CTRL+Z信號}while : #進入死循環dotrapper #調用函數printf "/n/n/n/n/n/n/n/n/t/t/tPlease enter unlock code:" | cowsaystty -echo  #屏蔽輸入的字符read inputcase $input in$mypassword)printf "/t/t Hello $USER,Today is $(date +%T)/n"stty echo  break ;;  #輸入正確,挑出循環回到命令行*)echo "Do not check my files,please! See as follows:"sleep 3clearcontinue ;;  #否則,繼續循環esacdone

運行演示

程序運行開始：

mark@mark:~/temp/myscripts$ ./lockscreen.sh

 ______________________________________
/ Please input the password you        /
/     will use later!                  /
 --------------------------------------
        /   ^__^
         /  (oo)/_______
            (__)/       )///
                ||----w |
                ||     ||
123
Screen will locked in 7 seconds!

由于靜態文本沒辦法顯示程序執行過程中的動態效果，所以直接看解鎖界面吧
當我們輸入不正確的密碼的時候，系統會提示輸入錯誤，以及一個幽默的“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 |
                ||     ||

當我們密碼輸入正確的時候，如下：

 ___________________________
/                           /
/ Please enter unlock code: /
 ---------------------------
        /   ^__^
         /  (oo)/_______
            (__)/       )///
                ||----w |
                ||     ||
         Hello mark,Today is 06:35:05

結語

代碼還是很簡單的，僅僅用到了shell腳本語法的幾個小命令。希望我這個腳本能拋磚引玉，打開你的思路，做出更好的鎖屏小腳本！