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Top Forums Shell Programming and Scripting Deleting columns passed as arguments to the script Post 302617265 by VNR on Monday 2nd of April 2012 10:30:33 AM
Old 04-02-2012
That worked. Thanks a lot.

Quote:
Originally Posted by agama
Yes, but this doesn't allow the columns to be specified dynamically. Something like the code below (provided your awk supports the -v option) will work:

Code:
awk -F "" -v collist="$columns_num_list" '
    BEGIN { OFS=""; ncol = split( collist, cols, "," ); }
    {
        for( i = 1; i <= ncol; i++ )
            $(cols[i]) = "";
        print;
    }
'  file_name.txt >new-file

 

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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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