中国DOS联盟

Using win32's gun sed 3.02

Using the following statement
sed "s/ *$//" data.txt
Fails to remove trailing spaces

But using the following statement
sed "s/^ *//" data.txt
Removing leading spaces is effective

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Removing trailing spaces works with a higher version of GNU SED (such as v4.0.7 under win32)

As for replacing three blank lines with semicolon + three blank lines, it was finally achieved with strw, the link is as follows
http://www.cn-dos.net/forum/viewthread.php?tid=39834&fpage=1&highlight=str

Last edited by qzwqzw on 2008-12-18 at 09:18 ]

Try sed.exe 4.1.4
Batch processing room attachment collection special posthttp://www.cn-dos.net/forum/viewthread.php?tid=25914

Thank you very much
But what I need is win32 version of sed

Found the GNU sed 4.0.7 under win32
Solved the problem of trailing spaces
But encountered a new problem
Want to replace \n\n\n with ;\n\n\n
Use
sed -e "s/\n\n\n/;\n\n\n/g" data.txt
Not working

echo \n\n\n|sed "s/\\n\\n\\n/;\\n\\n\\n/g"

The `-e` switch is generally used to connect multiple replacement conditions.
I wonder if the escape in floor 5 has solved your problem?

It's not like that. I'm exactly in need of the carriage return escape, and I don't want to treat it as an ordinary text character.

Strangely enough, using sed -e "s/\\n/\n/g" data.txt can replace the \n text in the text with a carriage return. That is to say, the \n such escape characters cannot be recognized in the text to be searched.

Sorry, I don't quite understand what purpose you want to achieve!

It's very simple. I want to replace two consecutive blank lines with ; followed by two blank lines.

I don't know if this is the meaning:

Microsoft Windows XP
(C) Copyright 1985-2001 Microsoft Corp.

C:\Test>type a.txt
aaa


bbb


ccc

C:\Test>sed "/^$/{:a;N;s/^\n$/;\n\n/;ta}" a.txt
aaa
;


bbb
;


ccc

C:\Test>sed --version
GNU sed version 4.1.4 (DJGPP port 2005-04-01 (r2))
Copyright (C) 2003 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,
to the extent permitted by law.

Semicolons need to be added at the end of the line immediately before the blank line

I wonder if there is a tool similar to Change under the win32 console. It's much simpler than sed.

Replace three empty lines with semicolon + three empty lines. Finally, implement it with strw. The link is as follows

http://www.cn-dos.net/forum/viewthread.php?tid=39834&fpage=1&highlight=str

Use sed to delete trailing spaces. The output format is non-DOS format. When opened in Notepad, it doesn't wrap lines. When opened in UE, it prompts to convert to DOS mode. How to handle it?