Sponsored Content
Full Discussion: Removing blank lines
Top Forums Shell Programming and Scripting Removing blank lines Post 302861275 by alister on Tuesday 8th of October 2013 01:26:50 PM
Old 10-08-2013
If by "blank" you actually mean "empty", the simplest approach is to use tr to squeeze multiple consecutive newlines into one.

You can handle blank and/or empty lines with ed (hint: g and d commands), sed, grep, or awk.

You've been a member for nearly a year and this is a very simple problem. What have you tried? Did you even search the forum?

Regards,
Alister
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Removing Blank Lines

Hi i have the below lines from a file 7538 PRGRP450800PERSONAL SOAP AND BATH ADDITIV 7036 PRGRP450800PERSONAL SOAP AND BATH ADDITIV 7036 PRGRP450800PERSONAL SOAP AND BATH ADDITIV 7036... (3 Replies)
Discussion started by: dhanamurthy
3 Replies

2. Shell Programming and Scripting

removing duplicate blank lines

Hi, how to remove the blank lines from the file only If we have more than one blank line. thanks rameez (8 Replies)
Discussion started by: rameezrajas
8 Replies

3. Shell Programming and Scripting

Removing blank lines from comma seperated and space seperated file.

Hi, I want to remove empty/blank lines from comma seperated and space seperated files Thanks all for help (11 Replies)
Discussion started by: pinnacle
11 Replies

4. Shell Programming and Scripting

PERL: removing blank lines from multiple files

Hi Guru's , I have a whole bunch of files in /var/tmp that i need to strip any blank lines from, so ive written the following script to identify the lines (which works perfectly).. but i wanted to know, how can I actually strip the identified lines from the actual source files ?? my... (11 Replies)
Discussion started by: hcclnoodles
11 Replies

5. UNIX for Dummies Questions & Answers

Removing blank lines in a file

Hi I have a text file that has blank lines at different places. How to remove all the blank lines in a file? Thanks Ashok (3 Replies)
Discussion started by: ashok.k
3 Replies

6. Shell Programming and Scripting

Delete blank lines, if blank lines are more than one using shell

Hi, Consider a file named "testfile" The contents of file are as below first line added for test second line added for test third line added for test fourth line added for test fifth line added for test (5 Replies)
Discussion started by: anil8103
5 Replies

7. UNIX for Dummies Questions & Answers

Removing blank lines not working

In my bash script I want to echo lines in a file and ensure no blank lines are echoed:for i in $(cat txt) do echo $i | sed 's/|/ /g;s/ SEARCHTERM$//g;s/ /\r\n/g;s/^$/d' done Keep in mind this is a fragment so ignore the fact that the for loop is not closed. When I add the "s/^$/d' per... (12 Replies)
Discussion started by: MaindotC
12 Replies

8. Shell Programming and Scripting

Removing blank lines from a file

Hi All, How do i remove continuos blank lines from a file. I have a file with data: abc; def; ghi; jkl; mno; pqr; In the above file, there are two blank lines. I want to remove, one out of them. My output should look like: (2 Replies)
Discussion started by: raosr020
2 Replies

9. UNIX for Advanced & Expert Users

Delete blank spaces and blank lines in a file

Hi Gurus, Somebody can say me how to delete blank spaces and blank lines in a file unix, please. Thank you for advanced. (10 Replies)
Discussion started by: systemoper
10 Replies

10. Shell Programming and Scripting

To check Blank Lines, Blank Records and Junk Characters in a File

Hi All Need Help I have a file with the below format (ABC.TXT) : ®¿¿ABCDHEJJSJJ|XCBJSKK01|M|7348974982790 HDFLJDKJSKJ|KJALKSD02|M|7378439274898 KJHSAJKHHJJ|LJDSAJKK03|F|9898982039999 (cont......) I need to write a script where it will check for : blank lines (between rows,before... (6 Replies)
Discussion started by: chatwithsaurav
6 Replies
GREP(1) 						      General Commands Manual							   GREP(1)

NAME
grep - search a file for lines containing a given pattern SYNOPSIS
grep [-elnsv] pattern [file] ... OPTIONS
-e -e pattern is the same as pattern -c Print a count of lines matched -i Ignore case -l Print file names, no lines -n Print line numbers -s Status only, no printed output -v Select lines that do not match EXAMPLES
grep mouse file # Find lines in file containing mouse grep [0-9] file # Print lines containing a digit DESCRIPTION
Grep searches one or more files (by default, stdin) and selects out all the lines that match the pattern. All the regular expressions accepted by ed and mined are allowed. In addition, + can be used instead of * to mean 1 or more occurrences, ? can be used to mean 0 or 1 occurrences, and | can be used between two regular expressions to mean either one of them. Parentheses can be used for grouping. If a match is found, exit status 0 is returned. If no match is found, exit status 1 is returned. If an error is detected, exit status 2 is returned. SEE ALSO
cgrep(1), fgrep(1), sed(1), awk(9). GREP(1)
All times are GMT -4. The time now is 03:13 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy