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Top Forums Shell Programming and Scripting Removing Duplicates from file Post 302552964 by jimmymj on Tuesday 6th of September 2011 08:16:49 AM
Old 09-06-2011
see a better solution for unique and duplicate records from a file:

Code:
sed '1d' $FILE1 | sort  -t "|" +1 -3 > temp1
cat temp1 |  awk -F"|" ' BEGIN{a=0}{a++; b[a]=$2$3; c[a]=$0} \
END { for(i=0; i<=a; ++i) if(b[i+1]==b[i]) print  c[i]"\n"c[i+1]}'|uniq >temp2
cat temp1 temp2 > temp3
sort temp3 | uniq -u > temp4
echo $HEADER > $FILE1
cat temp4 >> $FILE1


Last edited by radoulov; 09-06-2011 at 10:12 AM.. Reason: Code tags!
 

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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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