除去起始以小写字符的行 [英] Remove all lines starting with a lower case character

问题描述

如何从一个文件，如果他们以小写字符或标点符号开始删除所有行？

How to remove all lines from a file if they begin with a lower case character or punctuation?

A bamboo forest is located towards the ruins.
a banana .
aban Bajramovi was a Serbian-Romani musician.
Abancay is a city in southern-central Peru.
! a ban is the strictest punishment.

我想我的输出仅仅是：

I would like my output to simply be:

A bamboo forest is located towards the ruins.
Abancay is a city in southern-central Peru.

我试图用sed

I'm trying sed

sed 's/^[A-Z]/d' input 

但没有得到预期的效果，任何提示？

But not getting desired results, any tips?

推荐答案

试试这个：

sed '/^[a-z[:punct:]]/d' file 

，也可以使用字符类都是由<一的建议href=\"http://stackoverflow.com/questions/22491064/remove-all-lines-starting-with-a-lower-case-character#comment34217124_22491101\">@glennjackman在注释：

sed '/^[[:lower:][:punct:]]/d' file 

$ cat file
A bamboo forest is located towards the ruins.
a banana .
aban Bajramovi was a Serbian-Romani musician.
Abancay is a city in southern-central Peru.
! a ban is the strictest punishment.

$ sed '/^[a-z[:punct:]]/d' file
A bamboo forest is located towards the ruins.
Abancay is a city in southern-central Peru.

$ sed '/^[[:lower:][:punct:]]/d' file
A bamboo forest is located towards the ruins.
Abancay is a city in southern-central Peru.

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