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Full Discussion: Two columns-Common records - 20 files
Top Forums Shell Programming and Scripting Two columns-Common records - 20 files Post 302773263 by vgersh99 on Wednesday 27th of February 2013 03:14:48 PM
Old 02-27-2013
awk -f jac.awk file1 file2 ... fileN
jac.awk:
Code:
FNR==1 {argc=(argc)?argc+1:2}
{v[$1];a[argc,$1]=$2}
END {
  for( i in v) {
    printf i
    for(j=2;j<=argc;j++) {
      idx=j SUBSEP i
      printf("%c%s",OFS,(idx in a)?a[idx]:OFS)
    }
    printf ORS
  }
}

Last edited by vgersh99; 02-27-2013 at 04:29 PM.. Reason: empty cell if a value is not present in a file
 

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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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