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Full Discussion: awk based script to ignore all columns from a file which contains character strings
Top Forums Shell Programming and Scripting awk based script to ignore all columns from a file which contains character strings Post 302716203 by elixir_sinari on Tuesday 16th of October 2012 05:04:19 AM
Old 10-16-2012
Code:
awk 'FNR==NR{
if(FNR>1 && $0 !~ /^[0-9, \t]$/)
 for(i=1;i<=NF;i++)
  if(!(i in drop) && $i !~ /^[0-9, \t]$/)
   drop[i]
next}
{t="";n=1
for(i=1;i<=NF;i++)
 if(!(i in drop))
  t=(n++ == 1)? $i : t FS $i
$0=t
}1' FS=, file file

 

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LEARN ABOUT CENTOS

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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