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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                # 一個示例 - 1.單引號括起來是字符串 - 2.雙引號也是字符串,但可以解析變量 - 3.聲明變量不需要`$`, 并且`=`左右不能有空格 - 4.數組只能有一維 ```shell #!/bin/bash # 輸出輸入 echo '你叫什么名字吖?' read name # 變量聲明和使用 woc='hello world!' echo "雙引號可以解析變量: $woc, ${woc}額額額" # 只讀變量 url="edk24.com" readonly url # 提取子字符串 echo ${url[0:5]} # 輸出 edk24 #刪除變量 unset url # 定義數組 arr=(1 2 3 n...) arr1=( 1 2 n... ) arr3[0]='hello' arr3[1]='world' # 讀取數組 // ${數組名[下標]} echo ${arr3[1]} # 輸出 world # 數組讀取元素 echo ${arr3[@]} # 取得數組元素的個數 length=${#arr3[@]} length=${#arr3[*]} # 取得數組單個元素的長度 lengthn=${#arr3[n]} :<<! 多行注釋, `!`可以換成單引號或EOF, 必須成對 ! ```
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