Need to keep duplicate records


 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers Need to keep duplicate records
# 1  
Old 01-06-2012
Need to keep duplicate records

Consider my input is
Code:
10
10
20

then,
Code:
uniq -u

will give 20 and
Code:
uniq -d

will return 10.
But i need the output as ,
Code:
10
10

How we can achieve this?

Thanks
# 2  
Old 01-06-2012
Here is one way of doing it:
Code:
uniq -u Inp_File > Temp
egrep -vf Temp Inp_File

# 3  
Old 01-06-2012
Is there any other one liner available for achieving this?

Thanks
# 4  
Old 01-06-2012
There's potentially endless ways of achieving this. If you want a one-liner:

Code:
uniq -c input | awk '$1>1 { N=$1; $1=""; while(N--) print }'

It uses 'uniq -c' to produce lines like "2 10" and "1 20". Then awk filters out all the ones with no repeats by $1>1. Then it gets rid of the first number with $1="", and does a loop printing the entire rest of the line as many times as the given count.
This User Gave Thanks to Corona688 For This Post:
# 5  
Old 01-06-2012
Awesome trick!! Thanks
 
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Duplicate records

Gents, Please give a help file --BAD STATUS NOT RESHOOTED-- *** VP 41255/51341 in sw 2973 *** VP 41679/51521 in sw 2973 *** VP 41687/51653 in sw 2973 *** VP 41719/51629 in sw 2976 --BAD COG NOT RESHOOTED-- *** VP 41689/51497 in sw 2974 *** VP 41699/51677 in sw 2974 *** VP... (18 Replies)
Discussion started by: jiam912
18 Replies

2. Shell Programming and Scripting

Duplicate records

Gents, I have a file which contends duplicate records in column 1, but the values in column 2 are different. 3099753489 3 3099753489 5 3101954341 12 3101954341 14 3102153285 3 3102153285 5 3102153297 3 3102153297 5 I will like to get something like this: output desired... (16 Replies)
Discussion started by: jiam912
16 Replies

3. Shell Programming and Scripting

How to keep the last 2 records from duplicate entries?

Gents, Please how I can get only the last 2 records from repetead values, from column 2 input 1 1011 1 1011 1 1012 1 1012 1 5001 1 5001 1 5002 1 5002 1 5003 1 5003 1 7001 1 7001 1 7002 1 7002 (2 Replies)
Discussion started by: jiam912
2 Replies

4. Shell Programming and Scripting

Remove duplicate records

Hi, i am working on a script that would remove records or lines in a flat file. The only difference in the file is the "NOT NULL" word. Please see below example of the input file. INPUT FILE:> CREATE a ( TRIAL_CLIENT NOT NULL VARCHAR2(60), TRIAL_FUND NOT NULL... (3 Replies)
Discussion started by: reignangel2003
3 Replies

5. Shell Programming and Scripting

Deleting duplicate records from file 1 if records from file 2 match

I have 2 files "File 1" is delimited by ";" and "File 2" is delimited by "|". File 1 below (3 record shown): Doc1;03/01/2012;New York;6 Main Street;Mr. Smith 1;Mr. Jones Doc2;03/01/2012;Syracuse;876 Broadway;John Davis;Barbara Lull Doc3;03/01/2012;Buffalo;779 Old Windy Road;Charles... (2 Replies)
Discussion started by: vestport
2 Replies

6. UNIX for Dummies Questions & Answers

Getting non-duplicate records

Hi, I have a file with these records abc xyz xyz pqr uvw cde cde In my o/p file , I want all the non duplicate rows to be shown. o/p abc pqr uvw Any suggestions how to do this? Thanks for the help. rs (2 Replies)
Discussion started by: rs123
2 Replies

7. Shell Programming and Scripting

Remove Duplicate Records

Hi frinds, Need your help. item , color ,desc ==== ======= ==== 1,red ,abc 1,red , a b c 2,blue,x 3,black,y 4,brown,xv 4,brown,x v 4,brown, x v I have to elemnet the duplicate rows on the basis of item. the final out put will be 1,red ,abc (6 Replies)
Discussion started by: imipsita.rath
6 Replies

8. Shell Programming and Scripting

combine duplicate records

I have a .DAT file like below 23666483030000653-B94030001OLFXXX000000120081227 23797049900000654-E71060001OLFXXX000000220081227 23699281320000655 E71060002OLFXXX000000320081227 22885068900000652 B86860003OLFXXX592123320081227 22885068900000652 B86860003ODL-SP592123420081227... (8 Replies)
Discussion started by: kshuser
8 Replies

9. Shell Programming and Scripting

find duplicate records... again

Hi all: Let's suppose I have a file like this (but with many more records). XX ME 342 8688 2006 7 6 3c 60.029 -38.568 2901 0001 74 4 7603 8 969.8 958.4 3.6320 34.8630 985.5 973.9 3.6130 34.8600 998.7 986.9 3.6070 34.8610 1003.6 991.7 ... (4 Replies)
Discussion started by: rleal
4 Replies

10. Shell Programming and Scripting

Records Duplicate

Hi Everyone, I have a flat file of 1000 unique records like following : For eg Andy,Flower,201-987-0000,12/23/01 Andrew,Smith,101-387-3400,11/12/01 Ani,Ross,401-757-8640,10/4/01 Rich,Finny,245-308-0000,2/27/06 Craig,Ford,842-094-8740,1/3/04 . . . . . . Now I want to duplicate... (9 Replies)
Discussion started by: ganesh123
9 Replies
Login or Register to Ask a Question