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Full Discussion: awk statement help
Top Forums Shell Programming and Scripting awk statement help Post 303007202 by Don Cragun on Monday 13th of November 2017 07:04:11 PM
Old 11-13-2017
Hi brettcasper,
Welcome to the UNIX & Linux Forums. When starting a thread here it always helps if you tell us what operating system and shell you're using so we know what capabilities your system has.

In addition to what Yoda suggested, you might also try the following. By reversing the order in which the files are processed, it can process records from File1.txt one record at a time instead of having to store the entire contents of both files in memory.

Code:
awk -F'~' '
FNR == 1 {
	next
}
NR == FNR {
	site[$1] = site[$1] "Site Id: " $2 "\n"
	next
}
{	printf("Begin Record\nLocation: %s\n%sDate: %s\nContact: %s\nEnd Record\n\n",
	    $2, ($2 in site) ? site[$2] : "Site Id: " $1 "\n", $3, $4)
}' File2.txt File1.txt

If you're running this on a Solaris/SunOS system, change awk to /usr/xpg4/bin/awk or nawk.
This User Gave Thanks to Don Cragun For This Post:
brettcasper
 

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LEARN ABOUT DEBIAN

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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