Parsing null or empty output Post: 303009162

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to check for null or empty string

Hi, I need to check for value not equal (<>) to 21 and not equal empty or null values. Please modify this script if then echo "$VALUE,$BSC_NAME,$BSC_ID" > $OUT_FILE/power_up.out end if TQ

2. Shell Programming and Scripting

Removing Null data in output

Hello all, I have a script that has an infile with system package information. For the most part the script is looking well. The only thing i need help is in testing for null entries and removing null data. #!/usr/bin/ksh for i in `cat /mwncps/bin/eco_pack` do NAME=`pkginfo -l |...

3. Shell Programming and Scripting

Table null is empty

hi I m executing a shell script in which records are to be fetched from a table. If the sql that is running empty result set it is displaying "table null is empty !". I dont want this msg on the standard output. COuld you please help me in this regard

4. UNIX for Dummies Questions & Answers

cp output /dev/null results in not a directory

Hello, I am working on a script to measure the read performance of a busybox environment. The logical choice is to use a command line like: (time cp * /dev/null) 2> /tmp/howlong.txt Ah, the rub is cp or /dev/null will only accept a single file at a time. The result in the txt file is and...

5. Shell Programming and Scripting

PHP: how can I delete empty/NULL elements from a multi-dimensional array.

Hi all I have a file that i'm running and exec(cat ./dat) against..and putting its contents into any array, then doing an exploding the array into a multi-dimension array... The 15 multi-dimensional arrays have elements that are null/empty, I would like to remove/unset these elements and then...

6. Shell Programming and Scripting

Redirect system output to null in perl

Hi Guys, Please help me.. it is urgent. I am writing a perl script to capture command output and redirect it to a logfile.At the same i want to check the return code of the command and log it if the command is not succesful in my logfile.. Here is my code, it is working but system command inside...

7. Shell Programming and Scripting

redirect the audio output to /dev/null

I'm using an text-to-speech synthesis in a script, and I need to redirect it's output to /dev/null how can I do that ? And how to redirect the stream to his normal output then （sound card ) ? thankx

8. Shell Programming and Scripting

How to handle NULL value output from ISQL command?

I am using ISQL command in ksh script. Suppose if i get NULL value from the query which i run,how can i handle it? I am getting a NULL result set and the following error is coming. ############### output of isql command for getting the sum of JEs ################ ----------- NULL...

9. Shell Programming and Scripting

How to control a null output in EMC storage?

I dont want to print the output in a EMC VMAX storage if it says "The specified device was not found", however it is not letting me do it. I am trying to run this command: symaccess -sid xxxx list -type storage -devs 1234 output: The specified device was not found I just want the script...

10. Shell Programming and Scripting

Identify empty file with null record

Hi Team, I have a file abc.dat which is a empty file. But it has null record in first line. I need to identify this unique file and handle it separately. scenario 1: abc/dw> wc abc.dat 1 0 1 abc.dat abc/dw> cat abc.dat abc/dw> scenario 2: abc/dw> wc pqr.dat 0 0 0 pqr.dat...

LEARN ABOUT REDHAT

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 check for null or empty string

Discussion started by: doer

2. Shell Programming and Scripting

Removing Null data in output

Discussion started by: liketheshell

3. Shell Programming and Scripting

Table null is empty

Discussion started by: priyanka3006

4. UNIX for Dummies Questions & Answers

cp output /dev/null results in not a directory

Discussion started by: stevesmo