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Top Forums UNIX for Dummies Questions & Answers Removing duplicates from a file Post 302835715 by Sri3001 on Tuesday 23rd of July 2013 01:06:47 AM
Old 07-23-2013
Removing duplicates from a file

Hi All,

I am merging files coming from 2 different systems ,while doing that I am getting duplicates entries in the merged file

Code:
I,01,000131,764,2,4.00
I,01,000131,765,2,4.00
I,01,000131,772,2,4.00
I,01,000131,773,2,4.00
I,01,000168,762,2,2.00
I,01,000168,763,2,2.00
I,01,000622,761,6,14.64
I,01,000622,762,6,14.64
I,01,000622,763,6,14.64
I,01,000684,767,2,10.00
I,01,000131,764,2,5.00
I,01,000131,765,2,5.00
I,01,000131,772,2,6.00
I,01,000131,773,2,4.00
I,01,000168,762,2,2.00
I,01,000168,763,2,2.00
I,01,000622,761,6,14.64
I,01,000622,762,6,14.64
I,01,000622,763,6,14.64
I,01,000684,767,2,10.00


I tried using sort -u command to sort it unqiuely, using

Code:
sort -k 2,2 -k 3,3 -k 4,4 sample.txt | sort -u

,but it is not returning the correct result, it is giving the output like

Code:
I,01,000131,764,2,4.00
I,01,000131,764,2,5.00
I,01,000131,765,2,4.00
I,01,000131,765,2,5.00
I,01,000131,772,2,4.00
I,01,000131,772,2,6.00
I,01,000131,773,2,4.00
I,01,000168,762,2,2.00
I,01,000168,763,2,2.00
I,01,000622,761,6,14.64
I,01,000622,762,6,14.64
I,01,000622,763,6,14.64
I,01,000684,767,2,10.00

Is there way I can sort the file unique or remove duplicates using the 2nd ,3rd and 4th column as key fields.

Thanks
Sri

Last edited by Scrutinizer; 07-23-2013 at 02:15 AM.. Reason: code tags
 

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IRSEND(1)							   User Commands							 IRSEND(1)

NAME
irsend - basic LIRC program to send infra-red commands SYNOPSIS
irsend [options] DIRECTIVE REMOTE CODE [CODE...] DESCRIPTION
Asks the lircd daemon to send one or more CIR (Consumer Infra-Red) commands. This is intended for remote control of electronic devices such as TV boxes, HiFi sets, etc. DIRECTIVE can be: SEND_ONCE - send CODE [CODE ...] once SEND_START - start repeating CODE SEND_STOP - stop repeating CODE LIST - list configured remote items SET_TRANSMITTERS - set transmitters NUM [NUM ...] SIMULATE - simulate IR event REMOTE is the name of a remote, as described in the lircd configuration file. CODE is the name of a remote control key of REMOTE, as it appears in the lircd configuration file. NUM is the transmitter number of the hardware device. For the LIST DIRECTIVE, REMOTE and/or CODE can be empty: LIST "" "" - list all configured remote names LIST REMOTE "" - list all codes of REMOTE LIST REMOTE CODE - list only CODE of REMOTE The SIMULATE command only works if it has been explicitly enabled in lircd. -h --help display usage summary -v --version display version -d --device use given lircd socket [/var/run/lirc/lircd] -a --address=host[:port] connect to lircd at this address -# --count=n send command n times EXAMPLES
irsend LIST DenonTuner "" irsend SEND_ONCE DenonTuner PROG-SCAN irsend SEND_ONCE OnkyoAmpli VOL-UP VOL-UP VOL-UP VOL-UP irsend SEND_START OnkyoAmpli VOL-DOWN ; sleep 3 irsend SEND_STOP OnkyoAmpli VOL-DOWN irsend SET_TRANSMITTERS 1 irsend SET_TRANSMITTERS 1 3 4 irsend SIMULATE "0000000000000476 00 OK TECHNISAT_ST3004S" FILES
/etc/lirc/lircd.conf Default lircd configuration file. It should contain all the remotes, their infra-red codes and the corresponding timing and wave- form details. DIAGNOSTICS
If lircd is not running (or /var/run/lirc/lircd lacks write permissions) irsend aborts with the following diagnostics: "irsend: could not connect to socket" "irsend: Connection refused" (or "Permission denied"). SEE ALSO
The documentation for lirc is maintained as html pages. They are located under html/ in the documentation directory. lircd(8), mode2(1), smode2(1), xmode2(1), irrecord(1), irw(1), http://www.lirc.org. irsend 0.9.0-pre1 October 2010 IRSEND(1)
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