Empty Multiple files contents Post: 302522193

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How to empty file contents w/o rm and touch

Hi all, Can any one tell me how to empty the contents of a file in unix without using the following sequence : rm <file> ; touch <file> is there any command in unix?? is it possible through shell scripting? If so, how? -krishna

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Single command to create multiple empty files(no trailing lines as well).

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Split file into multiple files based on empty lines

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Creating multiple empty files with touch

Hello, sorry to bother anyone reading this I have an assignment with a question that reads: Your current directory is stenton. Create empty files called f1, f2, and f12 (in that order), within stenton So my first thought was to enter: touch f1 f2 f12 but that does not work, does anyone...

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 empty file contents w/o rm and touch

Discussion started by: kris_kris

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Create Multiple files by reading a input file and changing the contents

Discussion started by: bhargavkr

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Rename contents inside multiple files

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Shell Script to store contents of multiple files into one

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