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Full Discussion: Using an awk script to identify dupes in two files
Top Forums Shell Programming and Scripting Using an awk script to identify dupes in two files Post 302498911 by gimley on Tuesday 22nd of February 2011 10:05:55 PM
Old 02-22-2011
Using an awk script to identify dupes in two files
Hello,

I have two files. File1 or the master file contains two columns separated by a delimiter:
Code:
a=b
b=d
e=f
g=h

File 2 which is the file to be processed has only a single column
Code:
a
h
c
b

What I need is an awk script to identify unique names from file 2 which are not found in the master file

The desired output would be:
Code:
h
c

The master file is huge around 1,50,000 lines
The script I had written bu which did not work satisfactorily is as under:

# Use to match items present in 2 text databases
Code:
BEGIN {FS="="}
{
#Master file
if (ARGIND==1) {count[$1]=$2;}    
# Second file
if (ARGIND==2) {count2[$1]=$0;}   

}
END
{

for (i in count) 
#To show matching items. Commented
#if (count2[i] != "") {print count2[i]} 
To show items that do not match the master database
#if (count2[i] == "") {print count2[i]} 
}

It does show the uniks but also spews out the non-unique words.
Any help would be most appreciated. Please help since my dictionary work is halted

Many thanks in advance,

GIMLEY
Last edited by Franklin52; 02-23-2011 at 03:26 AM.. Reason: Please use code tags, thank you
 

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LEARN ABOUT CENTOS

paps

PAPS(1) 						      General Commands Manual							   PAPS(1)

NAME

       paps - UTF-8 to PostScript converter using Pango

SYNOPSIS

       paps [options] files...

DESCRIPTION

       paps reads a UTF-8 encoded file and generates a PostScript language rendering of the file. The rendering is done by creating outline curves
       through the pango ft2 backend.

OPTIONS

       These programs follow the usual GNU command line syntax, with long options starting with  two  dashes  (`-').   A  summary  of  options	is
       included below.

       --landscape
	      Landscape output. Default is portrait.

       --columns=cl
	      Number of columns output. Default is 1.

       --font=desc
	      Set the font description. Default is Monospace 12.

       --rtl  Do rtl layout.

       --paper ps
	      Choose paper size. Known paper sizes are legal, letter, a4. Default is A4.

       --bottom-margin=bm
	      Set bottom margin in postscript points (1/72 inch). Default is 36.

       --top-margin=tm
	      Set top margin. Default is 36.

       --left-margin=lm
	      Set left margin. Default is 36.

       --right-margin=rm
	      Set right margin. Default is 36.

       --help Show summary of options.

       --header
	      Draw page header for each page.

       --markup
	      Interpret the text as pango markup.

       --encoding=ENCODING
	      Assume the documentation encoding is ENCODING.

       --lpi  Set the lines per inch. This determines the line spacing.

       --cpi  Set the characters per inch. This is an alternative method of specifying the font size.

       --stretch-chars
	      Indicates  that  characters  should be stretched in the y-direction to fill up their vertical space. This is similar to the texttops
	      behaviour.

AUTHOR

       paps was written by Dov Grobgeld <dov.grobgeld@gmail.com>.

       This manual page was written by Lior Kaplan <kaplan@debian.org>, for the Debian project (but may be used by others).

								  April  17, 2006							   PAPS(1)
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