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                ??碼云GVP開源項目 12k star Uniapp+ElementUI 功能強大 支持多語言、二開方便! 廣告
                until 循環執行一系列命令直至條件為 true 時停止。until 循環與 while 循環在處理方式上剛好相反,一般while循環優于until循環,但在某些時候,也只是極少數情況下,until 循環更加有用。 ## 1.until循環語法 until語法。 ``` until command;do # 推薦 執行語句 done # 或 until command do 執行語句 done ``` ## 2.until循環案例 ``` #!/bin/bash a=0 until [ ! $a -lt 10 ];do echo $a a=`expr $a + 1` done ```
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