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Full Discussion: Initialize Variable Using awk Expression
Top Forums UNIX for Dummies Questions & Answers Initialize Variable Using awk Expression Post 302819189 by Ariean on Monday 10th of June 2013 12:05:09 PM
Old 06-10-2013
Initialize Variable Using awk Expression
Hello All,
What i am trying to do is read the input file delimited by pipe and do further logic like simulating the for loop but using awk not sure if this a right approach but as i was told doing "for i in `cat $file`" is an over kill so trying to replicate the same thing using awk script below. I am using bash shell and in the below awk expression i have 2 questions

1) Why print $1 is working but not echo $1?
2) How do i initialize or assign a value to the variable UNINUM like UNINUM=`print $1` or UNINUM=$1?

Code:
awk -F\| '
{
#       print "Provider: " $1, " Uninum: " $2, " Extract Date: " $3, " Loading Status: " $4
echo $1
print $1
#UNINUM=$1
echo $UNINUM
}
' "dwh_StageLoadEmail.lst"

dwh_StageLoadEmail.lst
Code:
710119|16|2012-09-30|COMPLETED
610000|16|2012-09-30|COMPLETED
710056|16|2012-09-30|COMPLETED

 

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LEARN ABOUT DEBIAN

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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