sed - 删除行尾的句点 [英] sed - remove period at end of line

问题描述

我正在尝试删除文本文件中位于行尾的句点.有些行的末尾有句点，有些则没有:

I'm trying to remove periods that are at the end of line in a text file. Some lines have periods at the end, some don't:

$cat textfile
sometexthere.123..22.no_period
moretext_with_period.  **<-- remove this period**
no_period_here_either
period.   **<-- remove this period**

我已经试过了，但它似乎不起作用:

I've tried this, but it doesn't seem to work:

sed 's/\.$//g' textfile > textfile2

(GNU sed 版本 4.2.1)

(GNU sed version 4.2.1)

谢谢

推荐答案

这是摸不着头脑的，但我之前尝试将 Windows 文件与 Linux 文件混合时遇到了这个问题.Windows 在每个换行符处添加一个额外的 \r(除了标准的 \n)您是否尝试过使用 dos2unix?

This is a shot in the dark, but I had this problem before when I tried to mix Windows files with Linux files. Windows adds an extra \r on every line break (in addition to the standard \n)Have you tried using dos2unix?

[user@localhost ~]$ cat testfile
abc
def.
[user@localhost ~]$ sed 's/\.$//g' testfile
abc
def.
[user@localhost ~]$ dos2unix testfile
dos2unix: converting file testfile to UNIX format ...
[user@localhost ~]$ sed 's/\.$//g' testfile
abc
def
[user@localhost ~]$ 

例如这个 -

[user@localhost ~]$ cat temp.txt 
this is a text created on windows
I will send this to unix
and do cat command.

[user@localhost ~]$ cat -v temp.txt 
this is a text created on windows^M
I will send this to unix^M
and do cat command. 

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