sed command to condense two lines into one

Tags

shell scripts

Top Forums Shell Programming and Scripting sed command to condense two lines into one

02-07-2013

Registered User

2, 0

Join Date: Feb 2013

Last Activity: 9 March 2013, 6:19 PM EST

Posts: 2

Thanks Given: 0

Thanked 0 Times in 0 Posts

Quote:

Originally Posted by gary_w

Code:

sed 'N;s/PATTERN1\nPATTERN2//' file

This worked for some but not all instances of PATTERN1\nPATTERN2 in my file, which has many lines without this pattern.

Quote:

Originally Posted by Scrutinizer

Code:

sed '/PATTERN1/{N;s/PATTERN1\nPATTERN2//;}' infile

This worked perfectly for all instances! Thank you very much for your outstanding help with my problem.

May I ask if there is a particularly helpful resource to learn about using sed for multiline processing. To become proficient in this would be such a powerful tool.

Last edited by scolfax; 02-07-2013 at 05:53 PM..

scolfax

View Public Profile for scolfax

Find all posts by scolfax

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

sed command removes lines in file

Hi, I am modifying a file with sed command. i want to make SCORE= blank in the file whereever SCORE=somevalue. What will *$ do in the below command? cat $file | sed 's/SCORE=.*$/SCORE=\r/g' > newfile The last line is also missing in the new file. How to make SCORE='100' to SCORE=...

2. Shell Programming and Scripting

sed command : print lines having no # at the begining

I am trying to print those line which has no # in the begining of the line. The sed I used for this purpose as shown below is not giving the required output. echo 'PDE 5600' | sed -n 's/^\!#/&/p' Where lies the problem:confused:

3. Shell Programming and Scripting

What's the command to remove empty lines with sed?

3 10 20 10 100 100 10000 Output: 3 10 20 10 100 100 10000 ---------- Post updated at 07:59 AM ---------- Previous update was at 07:56 AM ---------- sed '/^$/d' file doesn't work.

4. Solaris

sed command to print lines after expression

Hi guys. I need a sed command to print like 10 lines after a regular expression is found in the log. Can anyone help me out. Thanks ---------- Post updated at 10:52 AM ---------- Previous update was at 10:34 AM ---------- never mind. I just did the search bewteen two expressions.

5. UNIX for Dummies Questions & Answers

sed command, make multiple lines into one

:confused:Hi, I'm relativley new at unix so am having difficulties at the most basic of areas. I am trying using sed to make multiple lines into one line. For example, i would like: Mary had a little lamb to look like this Maryhadalittlelamb so far i have tried sed...

6. Shell Programming and Scripting

How to use sed command for change special lines?

Hi, I want to add a character "#" in this few lines with sed command Initial: ### CACCIA: DEBUT ### if $(grep -wqi "$2" /etc/passwd); then chuser -R files registry=files $2 fi ### CACCIA: FIN ### Result with sed command: ### CACCIA: DEBUT ### #if $(grep -wqi "$2"...

7. UNIX for Dummies Questions & Answers

Sed command over multiple lines in csh??

hi i have a long sed command in a csh script that won't fit on 1 line. how do i break it up correctly over multiple lines? this doesn't seem to work in csh: sed -e s/template/$IP.$NN/ \ -e s/NRG/6/ \ -e s/inputf/$IS.$NN/ \ -e s/SHIFT/10.0/ <template.egsinp > $IP.$NN.inp i get: sed:...

8. Shell Programming and Scripting

awk/sed Command : Parse parameter file / send the lines to the ksh export command

Sorry for the duplicate thread this one is similar to the one in https://www.unix.com/shell-programming-scripting/88132-awk-sed-script-read-values-parameter-files.html#post302255121 Since there were no responses on the parent thread since it got resolved partially i thought to open the new...

9. Shell Programming and Scripting

sed command to get the total lines

hi, I am using the following code to get the first field of all the lines in a file using sed command.But its not printing the last line.Why it is so and how can i read the different fields of each line ? code: for i in $(sed = filename.txt | sed 'N;s/\n/ /' | cut -d " " -f1) do val1=`sed...

10. Shell Programming and Scripting

using sed command to replace multiple lines

the file contains the follwoing lines /* * Copyright (C) 1995-1996 by XXX Corporation. This program * contains proprietary and confidential information. All rights reserved * except as may be permitted by prior written consent. * * $Id: xxx_err.h,v 1.10 2001/07/26 18:48:34 zzzz $ ...

Shell Programming and Scripting