打印以＆＃34; X＆＃34;

Question

我可以使用什么命令打印以字符串开头的每一行？例如：

的test.txt

Hello world!
How are you?
I am doing fine.
blah blah blah.

echo test.txt startsWith H

打印

Hello world!
How are you?

Answer 1

您可以使用grep -E '^H' file ：

{{1}}