awk variables

[Oscar Herrera]

>I am trying to use both shell variables and awk variables in the 
>same awk call, but I cannot get both to work correctly.  I have tried
>many variations of quoting and have had no success.  The statement
>I want to use is :
>
>	awk "NR == $line_num {print $1}" filename
>
>where $line_num is a script variable (an integer) and $1 is the 
>awk variable for the first field.  I would even like to get more fancy 
>and say {print $n} where $n is a shell variable like "$1", "$2",...
>
>Does anyone know how this can be done in the C-Shell?
>Thanks.
>----------

	try

 	awk 'NR == '$line_num '{print $1}' filename

	Having $line_num not enclosed in single quotes should 
	allow the shell to get a hold of it and stick the variable value
	in its place.  I did not test this myself, but I vaguely
	remember this from a class long ago.