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Top Forums Shell Programming and Scripting sed or awk to remove specific column to one range Post 303029369 by RudiC on Friday 25th of January 2019 01:16:00 PM
Old 01-25-2019
Quote:
Originally Posted by ranjancom2000
But this one removing all the second column. I need to remove only up to three lines. After third i need the two column
Wouldn't it be nice to post a complete specification in the first place, then? And, to show your own ideas and attempts?


Try an awk approach:


Code:
awk 'NF == 3 {$2 = ""} 1' file
3  000123456
2  000123569
3  000123564
12 000123156
15 000125648
128 000125648

The refinements to eliminate the remaining two adjacent field separators are left as an exercise to the reader.
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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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