摘要：
写在前面：案例、常用、归类、解释说明。（By Jim）for命令重复一系列的命令是一种常见的编程实践。#!/bin/bash# basic for commandfor test in A B C D E F G H I J K L M N O P Qdo echo The next letter is $testdone结果：The next letter is AThe next letter is BThe next letter is CThe next letter is DThe next letter is EThe next letter is FThe next lette. 阅读全文