Sponsored Content
Top Forums Shell Programming and Scripting What's the command to remove empty lines with sed? Post 302450761 by cola on Friday 3rd of September 2010 09:59:27 PM
Old 09-03-2010
What's the command to remove empty lines with sed?

Code:
3

10 20

10 100

100 10000

Output:
Code:
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.

Last edited by cola; 09-03-2010 at 11:23 PM..
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Using sed to remove lines where field is empty

I was just looking at this post: https://www.unix.com/shell-programming-scripting/22893-delete-multiple-empty-lines.html. and I am looking to achieve the same with sed. So the idea is to delete lines from a file where a certain field has no value. Inputfile: EMID MMDDYY HOURS JOB EMNAME 0241... (4 Replies)
Discussion started by: figaro
4 Replies

2. Shell Programming and Scripting

using sed to remove lines

Can somebody explain why my sed command is not working. I do the folloinwg: Generates a binary file to /tmp/x1.out /usr/lib/sa/sa2 -s 4:00 -e 8:00 -i 3600 -A -o /tmp/x1.out decodes the file (no problem so far) sar -f /tmp/x1.out When I do this it does not appear to delete the... (4 Replies)
Discussion started by: BeefStu
4 Replies

3. Shell Programming and Scripting

perl or awk remove empty lines when condition

Hi Everyone, # cat 1 a b b cc 1 2 3 3 3 4 55 5 a b (2 Replies)
Discussion started by: jimmy_y
2 Replies

4. Shell Programming and Scripting

using vi -c to remove empty lines

Hello: I searched here for "vi -c" but found no hits. How can I use vi -c to remove ALL empty lines, regardless of how many? I tried <code> vi -c ":g/^$/d | wq" filename </code> but I have to run it several times. This is NOT homework. :) Thanks for your time. (3 Replies)
Discussion started by: Habitual
3 Replies

5. Shell Programming and Scripting

Command to remove duplicate lines with perl,sed,awk

Input: hello hello hello hello monkey donkey hello hello drink dance drink Output should be: hello hello monkey donkey drink dance (9 Replies)
Discussion started by: cola
9 Replies

6. Shell Programming and Scripting

sed remove multiple set of lines in one command

is there a way with sed to removed more than one set of lines in one line? so i mean sed ${firstElem},${lastIndex}d web.xml > web1.xml this will delete lines between ${firstElem},${lastIndex} i want in the same line to do somethinkg like this (doesn't work so far) sed... (3 Replies)
Discussion started by: Poki
3 Replies

7. Shell Programming and Scripting

Sed delete certain number of empty lines

Hi What I'm trying to do is delete every blank line upto a certain number, so for instance I only want to delete the first 4 empty lines within a file, I know how to delete every line with: sed '/^$/d' But I can't figure out how to limit it to only the first 4 occourances I though it... (5 Replies)
Discussion started by: duonut
5 Replies

8. Shell Programming and Scripting

Remove CR only on empty lines

Dear community, I have two output files that contains some CR # cat first.out 1234567890 598679857648566 9 1234567234 365837465873465 4 2342343243 289374982374894 4 # cat second.out 2342342342 ... (2 Replies)
Discussion started by: Lord Spectre
2 Replies

9. Shell Programming and Scripting

Single command to create multiple empty files(no trailing lines as well).

Hi, i need a single command to create multiple empty files(no trailing lines as well) and empty the files if already existing. please let me know or if this has been ansered, if some ocan share the link please, thanks > newfile.txt or :> newfile.txt do not work (4 Replies)
Discussion started by: Onkar Banerjee
4 Replies

10. Shell Programming and Scripting

Need command to replace empty using sed/awk

Hi, In a file we have the following data like as below abcdef="cfg-1-15" bmmdda-g-45-2 yhdiao"rtg-1-df-34" I need a sed/awk command to replace the above string with empty. Thx, (1 Reply)
Discussion started by: kirankumar
1 Replies
GSL-RANDIST(1)						      General Commands Manual						    GSL-RANDIST(1)

NAME
gsl-randist - generate random samples from various distributions SYNOPSYS
gsl-randist seed n DIST param1 param2 [..] DESCRIPTION
gsl-randist is a demonstration program for the GNU Scientific Library. It generates n random samples from the distribution DIST using the distribution parameters param1, param2, ... EXAMPLE
Here is an example. We generate 10000 random samples from a Cauchy distribution with a width of 30 and histogram them over the range -100 to 100, using 200 bins. gsl-randist 0 10000 cauchy 30 | gsl-histogram -100 100 200 > histogram.dat A plot of the resulting histogram will show the familiar shape of the Cauchy distribution with fluctuations caused by the finite sample size. awk '{print $1, $3 ; print $2, $3}' histogram.dat | graph -T X SEE ALSO
gsl(3), gsl-histogram(1). AUTHOR
gsl-randist was written by James Theiler and Brian Gough. Copyright 1996-2000; for copying conditions see the GNU General Public Licence. This manual page was added by the Dirk Eddelbuettel <edd@debian.org>, the Debian GNU/Linux maintainer for GSL. GNU
GSL-RANDIST(1)
All times are GMT -4. The time now is 10:15 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy