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Full Discussion: Pass script variable value to AWK
Top Forums Shell Programming and Scripting Pass script variable value to AWK Post 302123991 by anbu23 on Thursday 28th of June 2007 05:02:23 AM
Old 06-28-2007
Quote:
I have a normal ksh script and sometime I call awk command. I set some variables in the script and I would like to use them up within AWK as well. Unfortunately AWK seems to forget all the variable values outside of its own AWK section.
E.g.

#!/bin/ksh
whatever=100
awk ' {print whatever}' /tmp/dummy

How can I make AWK aware of a variable value set outside of AWK section?
Code:
#!/bin/ksh
whatever=100
awk ' { print "'$whatever'" } ' /tmp/dummy

Code:
#!/bin/ksh
whatever=100
awk -v whatever=$whatever ' { print whatever } ' /tmp/dummy

Code:
#!/bin/ksh
whatever=100
awk ' { print whatever } ' whatever=$whatever /tmp/dummy

Quote:
in ksh I was able to typeset -i variable for better calculations. Is there any kind variable set within AWK?
The same arithmetical command gives me a normal result in ksh (e.g. 238749, but in AWK the same in format like 1.34983+12). Is there any way to have normal number in AWK as well?
Code:
$ awk ' BEGIN { v=238749*121212; print v } '
2.89392e+10
$ awk ' BEGIN { v=238749*121212; printf("%f\n",v) } '
28939243788.000000

 

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LEARN ABOUT LINUX

igawk

IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME

       igawk - gawk with include files

SYNOPSIS

       igawk [ all gawk options ] -f program-file [ -- ] file ...
       igawk [ all gawk options ] [ -- ] program-text file ...

DESCRIPTION

       Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1).

       AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like

	      @include getopt.awk

       in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path.

OPTIONS

       See gawk(1) for a full description of the AWK language and the options that gawk supports.

EXAMPLES

       cat << EOF > test.awk
       @include getopt.awk

       BEGIN {
	    while (getopt(ARGC, ARGV, "am:q") != -1)
		 ...
       }
       EOF

       igawk -f test.awk

SEE ALSO

       gawk(1)

       Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995.

AUTHOR

       Arnold Robbins (arnold@skeeve.com).

Free Software Foundation					    Nov 3 1999								  IGAWK(1)
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