delete line Post: 302300910

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how to delete line with matching text and line immediately after

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Sed or Grep to delete line containing patter plus extra line

I'm new to using sed and grep commands, but have found them extremely useful. However I am having a hard time figuring this one out: Delete every line containing the word CEN and the next line as well. ie. test.txt blue 324 CEN green red blue 324 CEN green red blue to produce:...

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Mismatched free() / delete / delete [] line no missing

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LEARN ABOUT ULTRIX

pnmdepth

pnmdepth(1)                                                   General Commands Manual                                                  pnmdepth(1)

NAME

       pnmdepth - change the maxval in a portable anymap

SYNOPSIS

       pnmdepth newmaxval [pnmfile]

DESCRIPTION

       Reads a portable anymap as input.  Scales all the pixel values, and writes out the image with the new maxval.  Scaling the colors down to a
       smaller maxval will result in some loss of information.

       Be careful of off-by-one errors when choosing the new maxval.  For instance, if you want the color values to be five bits wide, use a  max-
       val of 31, not 32.

       One  important  use  of pnmdepth is to convert a new format 2-byte-per-sample PNM file to the older 1-byte-per-sample format.  Before April
       2000, essentially all raw (binary) format PNM files had a maxval less than 256 and one byte per sample, and many programs may rely on that.
       If  you  specify  a  newmaxval  less than 256, the resulting file should be readable by any program that worked with PNM files before April
       2000.

SEE ALSO

       pnm(5), ppmquant(1), ppmdither(1)

AUTHOR

       Copyright (C) 1989, 1991 by Jef Poskanzer.

                                                                   08 April 2000                                                       pnmdepth(1)

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

how to delete line with matching text and line immediately after

Discussion started by: orahi001

2. Shell Programming and Scripting

how to delete text from line starting pattern1 up to line before pattern2?

Discussion started by: repudi8or

3. Shell Programming and Scripting

sed: delete regex line and next line if blank

Discussion started by: one71

4. Shell Programming and Scripting

Sed or Grep to delete line containing patter plus extra line

Discussion started by: rocketman88