If statement with pipeline Post: 302866223

9 More Discussions You Might Find Interesting

1. Programming

C program help please! input from pipeline

I have a project where I have to use bzcat to uncompress a file and use that output as the data to run another program on. I understand that you would do (bzcat filename.bz2 ! program name) but then how do you access that data in the c program??? Please help thanks

2. UNIX for Dummies Questions & Answers

Unix Pipeline help

Does anyone know how to answer this? I have tried many different commands, I just cant get it right..... Search the file 'data' for all of the lines that contain the pattern 'unx122' and put those lines in the file 'matches'.

3. Shell Programming and Scripting

Comments within a shell pipeline

I've got a very ugly pipeline for analyzing web server logs (but nevermind the application; I've come across this in other scripts as well). I want to nicely comment the steps in the pipeline, but I can't seem to do it. I know, for instance that in csh/sh/bash, a # begins a comment, and any...

4. Shell Programming and Scripting

Retaining Pipeline values

Hi, I am trying to calculate a few values using the below code but it dosent seem to be working. for i in 1 2 3 4 5 6 7 8 do j=`expr $i + 3` x =`head -$j temp1|tail -1|cut -f24 -d","` y =`head -$j temp1|tail -1|cut -f25 -d","` c =`expr $x / $y` echo "$c" >> cal_1 done I am not...

5. Shell Programming and Scripting

Shell pipeline help for a n00b

I need to read input from a file, and make sure nothing prints after column 72. basically, ignore input after character 72 until the next newline character. Any help is appreciated. I have been searching forever!

6. Shell Programming and Scripting

uniq -c in the pipeline

Hello gurus - I must be missing something, or there is a better way - pls enlighten me I'm on a Solaris 10 vm running the following pipeline to reduce some apache logs (actually lynx dumps of /server-status/ when threads are above a threshold) to a set of offending DDoS IP addresses. awk...

7. Shell Programming and Scripting

Change the delimiter from Comma to Pipeline

Hello All, I need to convert a csv file to pipeline delimiter file in UNIX. The data in file itself contains comma with double qouted qualifier apart from the comma separator. Let me know how to do it. Appreciate any help if awk can be used to do it. Mentioned below is the sample record of...

8. Shell Programming and Scripting

Command pipeline trouble

Hello, I am attempting to ssh to a server and run a set of commands on a remote set of servers. I am getting the following error below, I am thinking quotes may be the problem. This command works on the local machine in bash. Not when I ssh to a remote server. Basically the command should...

9. Shell Programming and Scripting

Using cat and pipeline to execute script

hi this is a homework assignment i need some help with it mostly works. script file #!/usr/bin/env bash #create dictionary file grep -E '.{3}' /usr/share/dict/british-english > db.txt #create remove_word to test file touch removeW.txt #palindrome function palin() { ...

LEARN ABOUT V7

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)