正則表達式學習筆記

1.1 正則表達式，區分大小寫 $ echo "This is a test" | sed -n '/this/p' 將不會有輸出 ---- $ echo "This is a test" | sed -n '/This/p' This is a test   1.2 正則表達式，不用將單詞完整寫出 $ echo "The books are expensive" | sed -n '/book/

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