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Shell 程式設計/eval 命令
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Shell 程式設計
eval 命令類似於 shell 指令碼中的額外 $.它評估字串並嘗試將其擴充套件為變數。例如,以下內容將字串評估為 $horse 並展開變數 horse 的值。
eval $"horse"
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書本:Shell 程式設計
華夏公益教科書