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Top Forums Shell Programming and Scripting awk if statement in a for loop? Post 302839715 by MadeInGermany on Friday 2nd of August 2013 11:45:47 AM
Old 08-02-2013
With awk, field delimiter ,:
Code:
grep 2 sourcefile | awk -F, 'NR==FNR {A[$2]; next} ($3 in A) {print $1}' - targetfile

If NR == FNR (true for File1, here - == stdin == pipe) then store in array A, key is $2 (field 2) and jump to next line. Otherwise (not File1, i.e. in targetfile), if $3 (field 3) is in array A, print $1 (field 1)
All in one awk:
Code:
awk -F, 'NR==FNR {if ($0~search) A[$2]; next} ($3 in A) {print $1}' search=2 sourcefile targetfile

 

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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). ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWgawk | +--------------------+-----------------+ |Interface Stability | Volatile | +--------------------+-----------------+ NOTES
Source for gawk is available on http://opensolaris.org. Free Software Foundation Nov 3 1999 IGAWK(1)
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