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Top Forums UNIX for Beginners Questions & Answers Reading and copying a selected rows Post 302979362 by Scrutinizer on Saturday 13th of August 2016 01:51:23 AM
Old 08-13-2016
Try something like this:
Code:
awk '{f="file" $1} p!=f{if(p)close(f); p=f} ++C[$1]<=4{print >f}' file

The input file needs to grouped on field 1 for this to work. If that is not the case, it needs to be sorted first..
Closing the files is necessary, otherwise awk will have too many files open at once...

Last edited by Scrutinizer; 08-13-2016 at 02:57 AM..
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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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