overwrite problem Post: 67545

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1. UNIX for Dummies Questions & Answers

Overwrite

if i want to pipe output to a file, say, cat abc.dat > abc.txt, how do i make it replace the existing file?

2. AIX

AIX 5.3 BOS Overwrite Installation problem

Hi list, I am trying to perform an AIX 5.3 new installation on a p505 machine. After plugging the machine on the power and connecting using Hyperterminal through COM1 I get the following screen: Welcome Machine type-model: 9115-505 Serial number: 102765A Date: 2010-1-12 ...

3. Shell Programming and Scripting

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Hi, i have a file ver.sql with the following contents , Here i need to put a in the next line of END statment . So iam doing the following D:\>type ver.sql begin ctxsys.driimp.set_value('STOP_WORD','yours'); ctxsys.driimp.set_object('STORAGE','BASIC_STORAGE',2);...

4. UNIX for Dummies Questions & Answers

overwrite problem

my script is: awk '...mycode...' file1.txt > file2.txt and i want to overwrite file2.txt eachtime I run this script. but it says:File exists! :( I have tried awk '...mycode...' file1.txt >| file2.txt but it again says:Missing name for redirect! :confused::confused: what is this?

5. UNIX for Advanced & Expert Users

linux overwrite directory

How do you overwrite a directory with another directory? I know you can delete your directory then copy your directory over, but I would think there would be a way to do this in one step.

6. Shell Programming and Scripting

overwrite only if both files are the same size

Dear users, I've been looking for a way to overwrite files only if both have the same size, how could I do this? any help is very appreciated. Best regards, Gery

7. Shell Programming and Scripting

Better to Delete or Overwrite

Hello All, I had just a question about my Bash Script I'm currently writing. The script I have writes some text to a output file. After I write to the output file I send the file to another server to do some stuff with it. After the file sends in the script, I don't need the output/txt...

8. UNIX for Dummies Questions & Answers

[Solved] Suppress do you wish to overwrite (y or n)?

Hi all, as i have to deal every day with .log and also .csv files, i would like to know if there is any way to suppress "do you wish to overwrite (y or n)?" prompt with the option no for all prompts, the command i usually run is the following, find...

9. Shell Programming and Scripting

First run overwrite then append

I'm overwriting .unl in first run and after that in seq. runs appending by following method. Any other method or command can do it easier? ARY_VALUE=1 while do if ; then type.sql > out.unl else type.sql >>out.unl fi ARY_VALUE--; done

LEARN ABOUT LINUX

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)