Sed/awk to delete single lines that aren't touching other lines Post: 302583606

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sed help - delete last 2 lines.

I have been reading through the sed one liners, trying to understand what is happening. # delete the last 2 lines of a file sed 'N;$!P;$!D;$d' The above will delete the last 2 line of a file. I tried analyzing what happens. And I got lost :( This is what I understood so far from the...

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sed problem - delete all lines until a match on 2 lines

First of all, I know this can be more eassily done with perl or other scripting languages but, that's not the issue. I need this in sed. (or wander if it's possible ) I got a file (trace file to recreate the control file from oracle for the dba boys) which contains some lines another line...

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Sed to delete lines that with the following

Hi, I'm very new to Sed and I have a very large file that contains data in the following way (*064) 1 4 10 (*064) simulation time = 0.12000E-05 (*064) 1 2 10 (*064) 1 3 10Essentially what I want to do it delete every line that starts with '(*064) 1'I tried the following, ...

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How to delete lines using sed?

<VirtualHost 192.168.1.158:80> DocumentRoot /home/ten ServerName ten.com </VirtualHost> <VirtualHost 192.168.1.158:80> DocumentRoot /home/sachin ServerName sachin.com </VirtualHost> <VirtualHost 192.168.1.158:80> DocumentRoot /home/yuvraj ServerName yuvraj.com...

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sed/awk : how to delete lines based on IP pattern ?

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sed or awk delete character in the lines before and after the matching line

Sample file: This is line one, this is another line, this is the PRIMARY INDEX line l ; This is another line The command should find the line with “PRIMARY INDEX” and remove the last character from the line preceding it (in this case , comma) and remove the first character from the line...

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Delete Lines : after pattern1 and between pattern2 and pattern3 using awk/sed/perl

Hi I need to delete lines from a file which are after pattern1 and between pattern 2 and patter3, as below: aaaaaaaa bbbbbbbb pattern1 cdededed ddededed pattern2 fefefefe <-----Delete this line efefefef <-----Delete this line pattern3 adsffdsd huaserew Please can you suggest...

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Summing over specific lines and replacing the lines with the sum using sed, awk

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sed or awk: delete n lines following a formfeed

Hi Members, This is my first post in this forum. I want to do is match form feed lines one by one in a file and delete the next n lines (ex-3 lines) with the form feed character Eg - Files looks like Data 1 Data 2 Data 3 FF Hdr1 Hdr2 Hdr3 Data4 Data5 FF Hdr1 Hdr2 Hdr3

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Sed/awk to delete a regex between range of lines

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LEARN ABOUT OSF1

ppmtopgm

ppmtopgm(1)						      General Commands Manual						       ppmtopgm(1)

NAME

       ppmtopgm - convert a portable pixmap into a portable graymap

SYNOPSIS

       ppmtopgm [ppmfile]

DESCRIPTION

       Reads  a  portable  pixmap  as  input.  Produces a portable graymap as output.  The output is a "black and white" rendering of the original
       image, as in a black and white photograph.  The quantization formula used is .299 r + .587 g + .114 b.

       Note that although there is a pgmtoppm program, it is not necessary for simple conversions from pgm to ppm , because any  ppm  program  can
       read  pgm  (and	pbm  ) files automatically.  pgmtoppm is for colorizing a pgm file.  Also, see ppmtorgb3 for a different way of converting
       color to gray.  And ppmdist generates a grayscale image from a color image, but in a way that makes it easy to differentiate  the  original
       colors, not necessarily a way that looks like a black and white photograph.

QUOTE

       Cold-hearted orb that rules the night
       Removes the colors from our sight
       Red is gray, and yellow white
       But we decide which is right
       And which is a quantization error.

SEE ALSO

       pgmtoppm(1),ppmtorgb3(1),rgb3toppm(1),ppmdist(1),ppm(5),pgm(5)

AUTHOR

       Copyright (C) 1989 by Jef Poskanzer.

								   10 April 2000						       ppmtopgm(1)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

sed help - delete last 2 lines.

Discussion started by: vino

2. Shell Programming and Scripting

sed problem - delete all lines until a match on 2 lines

Discussion started by: plelie2

3. Shell Programming and Scripting

Sed to delete lines that with the following

Discussion started by: lost.identity

4. Shell Programming and Scripting

How to delete lines using sed?

Discussion started by: tkmmelvin