Question around Global Variable Post: 302943495

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1. Shell Programming and Scripting

Global variable becomes local

I have encountered a very weird behavior of a global variable in Korn Shell in AIX: A function f1 in my script pipes the output of the function f2 to a program. A variable defined as global using typeset gets its value in f2. That value is not seen in f1. If I remove the pipe ksh recognizes the...

2. Shell Programming and Scripting

Global Variable in awk...

i think..... it's possible use a variable out a awk in the awk ??? ex. A=20071225 awk '{ print "the value is" $a }' OR awk '{ print "........"; c=10; print $c ; c=$A ; print $A}' for a external variable is possbile use in the awk ???

3. Shell Programming and Scripting

global variable in awk

I wrote a awk script file and define some global variables after BEGIN option: BEGIN { cell = ""; alarm = "";} when i run the command: awk -f awk_script inputfile The results are as expected. But when I put awk script into a shell script. Global variables couldn't be understand. I don't...

4. Shell Programming and Scripting

global variable not being set

In ksh I thought a global variable was any variable in a script or function that did not have the typeset command. I have a global in my calling script which I increment in a function, but the value does not change in the calling script. Here is the code: function f_open_log { typeset -r...

5. Shell Programming and Scripting

Global variable

I have written a shell scritp in which i am using a variable which is declared before a while loop and i am updaitng the variable in while loop and want to use its updated value outside the loop. I am not able to do so, b'coz the scope of the variable is limited to the while loop only and when i am...

6. Shell Programming and Scripting

global variable not holding its value?

dear there, this kept me awake last night, the variable ${TO} in the following script doesn't seem to hold its value. I have a file ./filelist, which lists all files of interests. I group them by keywords in the filename, and would like to count total number of lines in each group. ...

7. Shell Programming and Scripting

Help with Global Variable

Hi Guyz, I have a requirement like, i have to run a script every hour to count the number of errors encountered. At the end of the day, i need to send them the total number of errors, that have ocurred the entire day. For eg. if 10 errors occurred for starting 1 hr, 5 for next 1 hr, so on....

8. Shell Programming and Scripting

Global variable value

Hi All, Im new to shell scripting. I am running EgA.sh and setting one global variable XYZ=0 . Also calling another EgB.sh from EgA.sh, changing the value of XYZ=10 but after executing EgB.sh, value of XYZ is still 0. Im expecting it to be 10. Anyone for help. Thanks in Advance. :)

9. Programming

pthread question : global variable not updated

Hi, I wrote the following program to understand mutexes. If I run the program , number of threads is shown as zero, even after creating one thread. When running with gdb, it works fine. The function process is used to update global variable (used to keep track of threads). It looks like the...

10. Shell Programming and Scripting

Global Variable

Hi, I have created a variable say today at the begin having 123 as its value and inside a for loop it gets resolved to some value say 150 in its first iteration. How can I use this value 150 ( 1st iteration's ) outside the scope of for loop ?. In the same way I wanted to use all iteration's...

LEARN ABOUT ULTRIX

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

Global variable becomes local

Discussion started by: odashe318

2. Shell Programming and Scripting

Global Variable in awk...

Discussion started by: ZINGARO

3. Shell Programming and Scripting

global variable in awk

Discussion started by: anhtt

4. Shell Programming and Scripting

global variable not being set

Discussion started by: robotball