What's the command to remove empty lines with sed? Post: 302450855

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...

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...

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

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.

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

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...

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...

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 ...

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

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,

LEARN ABOUT DEBIAN

plan9-tr

TR(1)							      General Commands Manual							     TR(1)

NAME

       tr - translate characters

SYNOPSIS

       tr [ -cds ] [ string1 [ string2 ] ]

DESCRIPTION

       Tr  copies  the standard input to the standard output with substitution or deletion of selected characters (runes).  Input characters found
       in string1 are mapped into the corresponding characters of string2.  When string2 is short it is padded to the length of string1 by  dupli-
       cating its last character.  Any combination of the options -cds may be used:

       -c     Complement string1: replace it with a lexicographically ordered list of all other characters.

       -d     Delete from input all characters in string1.

       -s     Squeeze repeated output characters that occur in string2 to single characters.

       In  either  string a noninitial sequence -x, where x is any character (possibly quoted), stands for a range of characters: a possibly empty
       sequence of codes running from the successor of the previous code up through the code for x.  The character followed by 1,  2  or  3  octal
       digits  stands for the character whose 16-bit value is given by those digits.  The character sequence followed by 1, 2, 3, or 4 hexadecimal
       digits stands for the character whose 16-bit value is given by those digits.  A followed by any other character stands for that character.

EXAMPLES

       Replace all upper-case ASCII letters by lower-case.

	      tr A-Z a-z <mixed >lower

       Create a list of all the words in one per line in where a word is taken to be a maximal string of  alphabetics.	 String2  is  given  as  a
       quoted newline.

	      tr -cs A-Za-z '
	      ' <file1 >file2

SOURCE

       /src/cmd/tr.c

SEE ALSO

       sed(1)

																	     TR(1)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Using sed to remove lines where field is empty

Discussion started by: figaro

2. Shell Programming and Scripting

using sed to remove lines

Discussion started by: BeefStu

3. Shell Programming and Scripting

perl or awk remove empty lines when condition

Discussion started by: jimmy_y

4. Shell Programming and Scripting

using vi -c to remove empty lines

Discussion started by: Habitual