comment a line of the patterns is a the beginning of the line Post: 302692145

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Unix Script with line number at beginning of each line.

Could anybody help me. I need to create a script that reads a text file from STDIN and prints out the file to STDOUT with line numbers at the beginning of each line. Thanks.

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Placing a comment at the beginning of a line

Hello - I am running Linux. I want to place a comment char at the beginning of a line in a file. For example: testvar=`grep username /etc/people sed -e 's/$testvar/#$testvar/g' /etc/people I cannot get the above commands to put a comment at the beginning of the line. Any...

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How To comment a line where a word exists

Hi All Can u help me.. My problem is comment (#) a line where a word exists in that line sample: cat /tmp/file.txt monitor 192.168.1.11 Copying files in current directory 1 monitor 192.168.1.1 Copying files in current directory 2 monitor 192.168.1.12 Copying files in current...

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vim copy line and paste at the beginning, middle, and end of another line

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Hi from a script i want to to read a file beginning at line e.g. number 21 to the EOF. less +n21 temp.txt Bevor the result, it brings an empty page, so that i cant use for scripting. Any idea how the problem can be solved? Thanks in advance! IMPe

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How to comment a specific line of a file?

Hi, I need to comment out (insert # in the front of a line) a line that has entry Defaults requiretty using command-line as I need to do this on hundreds of servers. From Defaults requiretty To #Defaults requiretty I tried something like below but no luck: Please advise,...

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Find matched patterns and print them with other patterns not the whole line

Hi, I am trying to extract some patterns from a line. The input file is space delimited and i could not use column to get value after "IN" or "OUT" patterns as there could be multiple white spaces before the next digits that i need to print in the output file . I need to print 3 patterns in a...

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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

Unix Script with line number at beginning of each line.

Discussion started by: mascorro

2. Shell Programming and Scripting

Placing a comment at the beginning of a line

Discussion started by: mlike

3. UNIX for Dummies Questions & Answers

how to replace a text of line with a comment line

Discussion started by: manoj.b

4. Shell Programming and Scripting

How To comment a line where a word exists

Discussion started by: darren_j