print line if 2nd field exists in text Post: 302319552

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Top Forums Shell Programming and Scripting print line if 2nd field exists in text Post 302319552 by FrancoisCN on Monday 25th of May 2009 03:33:47 PM

05-25-2009

Registered User

print line if 2nd field exists in text

2 files, first one has 3 fields seperated by ||| and 2nd one is plain text.

I want to copy the lines from the first file if the 2nd field is present anywhere in the text file. This is what I've tried, but I'm new to awk and shell scripting in general so it's kinda broken.

Code:

#!/bin/awk -f
BEGIN 
{
   FS=" ||| ";
}

FILENAME=="./input/text" 
{
   # for all lines
   for (i; i < NR; i++) {
   # for all records on the current line
      for (j, j < NF; j++) {
         # if the 2nd field is seen in the text, increase its count
         if ($2 == $j) {
            seen[$2]++;
         }
      }
   }
}


# If the 2nd expression was seen at least once, print its corresponding line
{
   if ( seen[$2] > 0 ) {
      print $1 " \|\|\| " $2 " \|\|\| " $3;
   }
}

FrancoisCN

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LEARN ABOUT SUSE

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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