> For the complete documentation index, see [llms.txt](https://bash.netdpi.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://bash.netdpi.net/di-er-bu-ji-chu/di-si-zhang-bian-shu-yu-can-shu.md).

# 第四章、變數與參數

變數是程式語言與 script 語言表示資料的方式，變數只不過是一個標籤，一個用來儲存資料的名字，代表著電腦記憶體中的某個位置或一組位置。

變數會出現在算術運算、運算與字串分析。


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