Substitution Post: 302296122

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1. Shell Programming and Scripting

substitution

I am trying to substituted a variable to a file using sed. However, the value of that variable is not being substituted. Here is an example of my code. lf=' ' v_whole="${1} ${2} ${3} $lf" cp ${IPPDIR}/ctl/fax_sub_text_a.${4}.${5}.txt...

2. UNIX for Dummies Questions & Answers

Need help in substitution!!!!

In a file I want to globally change a "|" charater by a new line character. I am using the command 1,$s/\|/??/g Can anybody say what should I put in place of ?? in the above command?

3. Shell Programming and Scripting

Substitution using SED

Hi , I am stuck up in the below scenario:- I need to read a file name (eg A.txt) name frm another file (eg B.txt) and then I need to search for a particular expression in A.txt and substitute it with another expression. How can I use SED inside SHELL Scripting and command prompt as...

4. Shell Programming and Scripting

SED Substitution

5. Shell Programming and Scripting

Difference between "Command substitution" and "Process substitution"

Hi, What is the actual difference between these two? Why the following code works for process substitution and fails for command substitution? while IFS= read -r line; do echo $line; done < <(cat file)executes successfully and display the contents of the file But, while IFS='\n' read -r...

6. UNIX for Dummies Questions & Answers

help with substitution

Hello, I have a file with 10,000+ records which look like this: Image3992170.tif 4/21/200811:42:09AM 3,373.13KB Image3993265.tif 4/11/20087:17:58PM 2,369.72KB Image3996764.tif 5/2/200811:01:28AM 2,155.87KB Image3997700.tif ...

7. Shell Programming and Scripting

substitution help

How do i substitute ' with space in a file using sed or awk i am getting the following two scenarios 1) xyz'd with xyz d if i use sed 's/xyz\\\'d/xy z/g' it is taking ' after \ as closing expr for substitution 2) xyz';d with xyz d please advice

8. Shell Programming and Scripting

vi substitution

Hello, I'm trying to do a substitution in vi. which adds a field for the year to a line. If the line doesnt include a year, it should still add a field (although empty) the fields are: Country:number:number:name(and sometimes year):place this is a desired in and output: Sweden:55:32:John...

9. UNIX for Dummies Questions & Answers

vi substitution help

Hi experts, Could someone help me how to figure out the following substitution? I copied and pasted a column of names from an Excel file into another file in vi. The column of data has last names with dash (hyphens) and apostrophes. My goal is to do the following: 1) remove the apostrophes...

10. Shell Programming and Scripting

Substitution

I am trying to do some substitutions using the substitution operator (:%s) in a text file. I want to replace all A1, A2, A3.......A100 in my text file. I used :%s/A2/SAE/g successfully until A9 but when I use A1, all the A11 to A19 is changed. How do I specify the exact match here?

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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)