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Full Discussion: Providing variable contents to awk
Top Forums Shell Programming and Scripting Providing variable contents to awk Post 302605021 by Corona688 on Tuesday 6th of March 2012 12:50:26 PM
Old 03-06-2012
awk is its own entire programming language, incidentally. If all you wanted to do was to extract the second column for further processing, that further processing could probably be done inside awk too.

Or if you wanted to keep it in shell, you can do this wholly in shell without using awk at all:

Code:
while IFS="," read COL1 COL2 COL3
do
        echo "column 2 is ${COL2}"
done < inputfile

IFS is a special variable controlling what the shell does variable splitting on. Its value is only temporarily changed here, while read is being run.
 

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LEARN ABOUT REDHAT

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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