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Full Discussion: Remove duplicated records and update last line record counts
Top Forums Shell Programming and Scripting Remove duplicated records and update last line record counts Post 303032033 by green_k on Saturday 9th of March 2019 08:40:40 PM
Old 03-09-2019
Quote:
Originally Posted by Don Cragun
Your description and code are not clear enough to be sure that this is what you want, but it works with the sample data provided:
Code:
awk '
BEGIN {	FS = OFS = ","
}
$1 == "D" {
	if($2 in a)
		next
	a[$2]
	printed++
}
$1 == "T" {
	$2 = printed
}
1' file.CSV

Clearly field #2 is not the key to determining duplicate records, it is at least field #2 when and only when field #1 is "D". And, since you are storing the entire line into the a[] array for some reason, maybe you only want to delete identical lines instead of deleting lines with identical keys???

The above code assumes you just want to delete lines with identical keys where the key is the combination of field #1 being "D" and field #2 being unique. The second field in the line with field #1 being "T" is written with whatever was in field #2 changed to the number of lines with field #1 being "D" and field #2 being unique that have been seen before the line that has field #1 being "T". All lines that do not have field #1 being "D" or "T" are copied to the output without being counted.

You should always tell us what operating system and shell you're using when you start a new thread in this forum. The behavior of many utilities varies from operating system to operating system and the features provided by shells vary from shell to shell.

If you want to try the above code on a Solaris/SunOS system, change awk to /usr/xpg4/bin/awk or nawk.
thanks Don Cragun.
the result is exactly I want.
sorry, I didn't explain my request more detail. you are right. actually, the whole line is identical if field #2 is identical.
My OS is Solaris/SunOS. I will put my OS infor next time.
Thank you again.
 

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LEARN ABOUT DEBIAN

tcfmgr

TCFMGR(1)							   Tokyo Cabinet							 TCFMGR(1)

NAME

       tcfmgr - the command line utility of the fixed-length database API

DESCRIPTION

       The  command `tcfmgr' is a utility for test and debugging of the fixed-length database API and its applications.  `path' specifies the path
       of a database file.  `width' specifies the width of the value of each record.  `limsiz' specifies the limit  size  of  the  database  file.
       `key' specifies the key of a record.  `value' specifies the value of a record.  `file' specifies the input file.

	      tcfmgr create path [width [limsiz]]
		     Create a database file.
	      tcfmgr inform [-nl|-nb] path
		     Print miscellaneous information to the standard output.
	      tcfmgr put [-nl|-nb] [-sx] [-dk|-dc|-dai|-dad] path key value
		     Store a record.
	      tcfmgr out [-nl|-nb] [-sx] path key
		     Remove a record.
	      tcfmgr get [-nl|-nb] [-sx] [-px] [-pz] path key
		     Print the value of a record.
	      tcfmgr list [-nl|-nb] [-m num] [-pv] [-px] [-rb lkey ukey] [-ri str] path
		     Print keys of all records, separated by line feeds.
	      tcfmgr optimize [-nl|-nb] path [width [limsiz]]
		     Optimize a database file.
	      tcfmgr importtsv [-nl|-nb] [-sc] path [file]
		     Store records of TSV in each line of a file.
	      tcfmgr version
		     Print the version information of Tokyo Cabinet.

       Options feature the following.

	      -nl : enable the option `FDBNOLCK'.
	      -nb : enable the option `FDBLCKNB'.
	      -sx : the input data is evaluated as a hexadecimal data string.
	      -dk : use the function `tcfdbputkeep' instead of `tcfdbput'.
	      -dc : use the function `tcfdbputcat' instead of `tcfdbput'.
	      -dai : use the function `tcfdbaddint' instead of `tcfdbput'.
	      -dad : use the function `tcfdbadddouble' instead of `tcfdbput'.
	      -px : the output data is converted into a hexadecimal data string.
	      -pz : do not append line feed at the end of the output.
	      -m num : specify the maximum number of the output.
	      -pv : print values of records also.
	      -rb lkey ukey : specify the range of keys.
	      -ri str : specify the interval notation of keys.
	      -sc : normalize keys as lower cases.

       This command returns 0 on success, another on failure.

SEE ALSO

       tcftest(1), tcfmttest(1), tcfdb(3), tokyocabinet(3)

Man Page							    2011-02-12								 TCFMGR(1)
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