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Top Forums Shell Programming and Scripting using an awk internal variable as parameter for an external array Post 302550303 by MotAah on Thursday 25th of August 2011 09:12:40 AM
Old 08-25-2011
Question using an awk internal variable as parameter for an external array

Hello,

I am running a bash script under linux which first defines an CA-array like
Code:
j=0
num1=120.00
num2=10.00
until [$j -gt 5 ]
do
  CA[$j]='echo $num1 + $j*$num2'
  j=$[$j+1]
done

within the later awk section of this same script I want to read data from a file. If the value of the second column is equal to the value of CA[0 to 5] the array MF[0 to 5] should read the value from column 59:
Code:
awk '
BEGIN {
  ...
  i=0
  while ( i<5 ) {
    if ( match($2,/^'${CA[1]}'/) ) { MF[i] = $59 }
      i = i + 1
  }
}
END ' ${FILE}

As long in the bold written part the parameter of the array is fixed to certain value (here "1") the script works fine. In later stage I do want to read dozend of lines from the file and not only 5!

Does anyone know how I do have to change the script ('${CA[1]}') in order to have "i" of the awk loop to define the parameter fo the external array CA? Any help or work arround is appreciated.

Regards,

MotAah

Last edited by Scott; 08-25-2011 at 10:14 AM.. Reason: Code tags
 

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PAPS(1) 						      General Commands Manual							   PAPS(1)

NAME
paps - UTF-8 to PostScript converter using Pango SYNOPSIS
paps [options] files... DESCRIPTION
paps reads a UTF-8 encoded file and generates a PostScript language rendering of the file. The rendering is done by creating outline curves through the pango ft2 backend. OPTIONS
These programs follow the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is included below. --landscape Landscape output. Default is portrait. --columns=cl Number of columns output. Default is 1. --font=desc Set the font description. Default is Monospace 12. --rtl Do rtl layout. --paper ps Choose paper size. Known paper sizes are legal, letter, a4. Default is A4. --bottom-margin=bm Set bottom margin in postscript points (1/72 inch). Default is 36. --top-margin=tm Set top margin. Default is 36. --left-margin=lm Set left margin. Default is 36. --right-margin=rm Set right margin. Default is 36. --help Show summary of options. --header Draw page header for each page. --markup Interpret the text as pango markup. --encoding=ENCODING Assume the documentation encoding is ENCODING. --lpi Set the lines per inch. This determines the line spacing. --cpi Set the characters per inch. This is an alternative method of specifying the font size. --stretch-chars Indicates that characters should be stretched in the y-direction to fill up their vertical space. This is similar to the texttops behaviour. AUTHOR
paps was written by Dov Grobgeld <dov.grobgeld@gmail.com>. This manual page was written by Lior Kaplan <kaplan@debian.org>, for the Debian project (but may be used by others). April 17, 2006 PAPS(1)
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