sed line deletion problem

[mslonik]

Hello,

Task: delete the lines that have just one key in it: 0x0A (new line).

Problem is as simple as follows. The line below should remove all empty lines with use of sed:

sed -e 's/\x0A$//' proba03.txt

or

sed -e '/^$/ d' proba03.txt

or

sed -e '/^^M/d' proba03.txt

or

sed -e '/^M^/d' proba02.txt

or

sed -e 's/\n//' proba02.txt

Unfortunately none of above works. I'm using sed ver. 4.1.4 and 'Konsole' application under KDE.

Is this problem specific to Kubuntu? Help!

Kind regards,
Maciej

[colo]

sed "/^$/d"

should do the trick.

[mslonik]

Yes, I agree, it should do the trick. But it does not. That is a problem.

[colo]

colo@spareparts:~$ echo -e "line1\n\n\nline2\n\n\nline3" | sed "/^$/d"
line1
line2
line3
colo@spareparts:~$ sed --version
GNU sed version 4.1.5

(Edgy from today)

[mslonik]

Thanks a lot Colo. That shed some light on a problem. The core of a problem was that a file that I tried to remove empty lines has had \r\n sequence at the end of each line. To remove such a combination:

sed -e 's/.$//;/^$/d' proba04.txt

Thanks again!
Maciej (mslonik)

[mslonik]

Dear Colo,

By the way, can you help me with the following sed tasK:

There is a file (1temp1.txt) with the following line:
http://abra.ka.dabra/20060927-one-two/1000/002.jpg

I need sed command that will replace anything before and after
20060927-one-two

I tried something like this:
sed -e 's/.\+\/\///;s/.*\///' 1temp1.txt

but it replaces the longest pattern that fits to specified search pattern, so as a result I get just:
002.jpg

Any ideas?

Kind regards,
mslonik (Maciej)

[colo]

Hey mslonik,

sorry, haven't checked the forums for a few months - are you still in need of a solution for the problem?

Regards,
- colo

[mslonik]

Hey colo,

Thanks a lot for your reply. In the meantime I've mastered "sed" editor by myself, with help of guides that I've found in Internet. Anyway I appreciate your help :-]

Kind regards,
Maciej (mslonik)