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- linux.vbird.org
  
  鳥哥的 Linux 私房菜 -- 學習 bash shell
  
  ... 包括變數的設定與使用、 bash 操作環境的建置、資料流重導向的功能，還有那好用的管線命令！好好清一清腦門，準備用功去囉～ ^_^ 這個章節幾乎是所有指令列模式 (command line) 與未來主機維護與管理的重要基礎，一定要好好仔細的閱讀喔！ ...
  
  2025-06-10
  
  瀏覽：1394
- linux.vbird.org
  
  鳥哥的 Linux 私房菜 -- 學習 BASH Shell 咯
  
  ... ，當我們要顯示目前的 PATH 這個變數時，使用了 echo ，而為了要分辨是否為變數，那麼 Linux 系統預設變數名稱前面會加上一個『 $ 』符號，所以就必須要寫成 echo $PATH 囉！例題：請在螢幕上面顯示出您的環境變數 PATH, HOME 與 MAIL：
  
  2025-06-09
  
  瀏覽：1348

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Linux Shell Scripting Tutorial - A Beginner's handbook

日期：2025-06-12

Table of Contents Chapter 1: Quick Introduction to Linux What Linux is? Who developed the Linux? How to get Linux? How to Install Linux Where I can use Linux? What Kernel Is? What is Linux Shell? How to use Shell What is Shell Script ? Why to Write Shell...

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Date math in Linux shell script? | Ask Dave Taylor

日期：2025-06-16

Within a Linux shell script to be used as a cron job, how do I calculate the current date, the current date – n days, and the current date + n days ? This script is to be used to partition an oracle database, and automatically drop old partitions (n+1) an...

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UNIX/Linux Bash Shell Scripting: Math in Shell Scripts

日期：2025-06-11

2010年12月26日 - which adds some complexity to doing math in shell script. To keep ... sign, as with any bash variable assignment. $ c=$(($a+9)) $ echo $c 19...

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More examples of Shell Script (Exercise for You :-)

日期：2025-06-09

More examples of Shell Script (Exercise for You :-) These exercises are to test your general understanding of the shell scripting. My advise is first try to write this shell script yourself so that you understand how to put the concepts to work in real li...

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Math in Shell Scripts — Introduction to Unix Study Guide

日期：2025-06-12

Shell script variables are by default treated as strings, not numbers, which adds some complexity to ... An old Unix program that can evaluate math is expr. expr became popular in the days of the Bourne ......

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Simple Maths in the Unix Shell | *nix Shell

日期：2025-06-13

29 Jan 2007 ... One thing that often confuses new users to the Unix / Linux shell, ... The Unix shell is different, however. ... expr command examples in unix....

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