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Top Forums Shell Programming and Scripting awk to ignore whitespace in field Post 303002607 by Don Cragun on Monday 28th of August 2017 04:04:28 PM
Old 08-28-2017
If you want different input field separators for your two input files, you need to change the value of FS when you switch input files. Try:
Code:
awk 'FNR==NR {a[$1]=$2; next} a[$8]{$10=a[$8]}1' OFS="\t" file2 FS='\t' file1 > output

which uses the default (strings of one or more <space> and/or <tab> characters) as the field separator when reading from file2 and uses a single <tab> character as the field separator when reading from file1.
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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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