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Full Discussion: awk error when increasing number of files in folder
Top Forums Shell Programming and Scripting awk error when increasing number of files in folder Post 302948669 by owwow14 on Wednesday 1st of July 2015 10:51:29 AM
Old 07-01-2015
awk error when increasing number of files in folder
I have a folder with several files of which I want to eliminate all of the terms that they have in common using `awk`.
Here is the script that I have been using:

Code:
    awk '                
    FNR==1 {
        if (seen[FILENAME]++) {
            firstPass = 0
            outfile = FILENAME "_new"
        }
        else {
            firstPass = 1
            numFiles++
            ARGV[ARGC++] = FILENAME
        }
    }
    firstPass { count[$2]++; next }
    count[$2] != numFiles { print > outfile }
    ' *


An example of the information in the files would be:

Code:
File1

    3	oil 
    4	and  
    8	vinegar

Code:
File2

    4	hot  
    2	and  
    9	cold

The output should be:

Code:
    File1_new
    
        3	oil   
        8	vinegar

Code:
    File2_new
    
        4	hot  
        9	cold

It works when I use a small number of files (i.e. 10), but when I start to increase that number, I get the following error message:

awk: file20_new makes too many open files input record number 27, file file20_new source line number 14


Where is the error coming from when I use larger amounts of files?
Last edited by owwow14; 07-01-2015 at 11:58 AM..
 

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LEARN ABOUT REDHAT

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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