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摘要： bash for i in `ls *.txt`; do mv $i ${i%.txt}.md; done bash echo '127.0.0.1' | sed -n '/[0-9]\+.[0-9]\+.[0-9]\+.[0-9]\+/p' bash find / | grep -vE "要搜的字 閱讀全文

摘要： `nasm masm X86`  ![](https://img2023.cnblogs.com/blog/270 閱讀全文

摘要： 1.極限 $\lim\limits_{x\to 0} \frac{\sin x}{x}$ $\lim\limits_{x\to \infty} \left(1+\frac{1}{x}\right)^x$ $\lim\limits_{x\to 1} \frac{\ln(x)}{x-1}$ 2.洛必達(dá) 閱讀全文