Unix help to find blank lines in a file and print numbers on that line Post: 302360741

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how to print out line numbers of a text file?

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How to find a string in a line in UNIX file and delete that line and previous 3 lines ?

Hi , i have a file with data as below.This is same file. But actual file contains to many rows. i want to search for a string "Field 039 00" and delete that line and previous 3 lines in that file.. Can some body suggested me how can i do using either sed or awk command ? Field 004...

LEARN ABOUT OPENSOLARIS

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

how to print out line numbers of a text file?

Discussion started by: forevercalz

2. Shell Programming and Scripting

Strip one line from 2 blank lines in a file

Discussion started by: tipsy

3. Shell Programming and Scripting

Print lines after the search string until blank line is found

Discussion started by: prash184u

4. Shell Programming and Scripting

awk find a string, print the line 2 lines below it

Discussion started by: mglenney