Sponsored Content
Top Forums Shell Programming and Scripting Sort and Remove Duplicate on file Post 302521915 by mabarif16 on Thursday 12th of May 2011 05:58:48 PM
Old 05-12-2011
Sort and Remove Duplicate on file

How do we sort and remove duplicate on column 1,2 retaining the record with maximum date (in feild 3) for the file with following format.

Code:
aaa|1234|2010-12-31
aaa|1234|2010-11-10
bbb|345|2011-01-01
ccc|346|2011-02-01
bbb|345|2011-03-10
aaa|1234|2010-01-01

Required Output
Code:
aaa|1234|2010-12-31
bbb|345|2011-03-10
ccc|346|2011-02-01

I tried using sort -u , but how to retain the record with maximum date.
Thanks
Arif
 

9 More Discussions You Might Find Interesting

1. Solaris

How to remove duplicate records with out sort

Can any one give me command How to delete duplicate records with out sort. Suppose if the records like below: 345,bcd,789 123,abc,456 234,abc,456 712,bcd,789 out tput should be 345,bcd,789 123,abc,456 Key for the records is 2nd and 3rd fields.fields are seperated by colon(,). (2 Replies)
Discussion started by: svenkatareddy
2 Replies

2. Shell Programming and Scripting

How to remove duplicate records with out sort

Can any one give me command How to delete duplicate records with out sort. Suppose if the records like below: 345,bcd,789 123,abc,456 234,abc,456 712,bcd,789 out tput should be 345,bcd,789 123,abc,456 Key for the records is 2nd and 3rd fields.fields are seperated by colon(,). (19 Replies)
Discussion started by: svenkatareddy
19 Replies

3. Shell Programming and Scripting

Shellscript to sort duplicate files listed in a text file

I have many pdf's scattered across 4 machines. There is 1 location where I have other Pdf's maintained. But the issues it the 4 machines may have duplicate pdf's among themselves, but I want just 1 copy of each so that they can be transfered to that 1 location. What I have thought is: 1) I have... (11 Replies)
Discussion started by: deaddevil
11 Replies

4. Shell Programming and Scripting

remove of duplicate line from a file

I have a file a.txt having content like deepak ram sham deepram sita kumar I Want to delete the first line containing "deep" ... I tried using... grep -i 'deep' a.txt It gives me 2 rows...I want to delete the first one.. + need to know the command to delete the line from... (5 Replies)
Discussion started by: saluja.deepak
5 Replies

5. Shell Programming and Scripting

Remove duplicate lines based on field and sort

I have a csv file that I would like to remove duplicate lines based on field 1 and sort. I don't care about any of the other fields but I still wanna keep there data intact. I was thinking I could do something like this but I have no idea how to print the full line with this. Please show any method... (8 Replies)
Discussion started by: cokedude
8 Replies

6. Shell Programming and Scripting

Remove duplicate chars and sort string [SED]

Hi, INPUT: DCBADD OUTPUT: ABCD The SED script should alphabetically sort the chars in the string and remove the duplicate chars. (5 Replies)
Discussion started by: jds93
5 Replies

7. Shell Programming and Scripting

How to Remove duplicate value from file?

if different branch code is available for same BIC code and one of the branch code is XXX.only one row will be stored and with branch code as XXX .rest of the rows for the BIC code will not be stored. for example if $7 is BIC code and $8 is branch code INPUT file are following... (9 Replies)
Discussion started by: mohan sharma
9 Replies

8. UNIX for Dummies Questions & Answers

Sort and delete partical duplicate file

I want to delete partical duplicate file >gma-miR156d Gm01,PACID=26323927 150.00 -18.28 2 18 17 35 16 75.00% 81.25% >>gma-miR156d Gm01,PACID=26323927 150.00 -18.28 150.00 -18.28 1 21 119 17 I want to order by the second column and delete the... (1 Reply)
Discussion started by: grace_shen
1 Replies

9. Shell Programming and Scripting

Remove duplicate lines, sort it and save it as file itself

Hi, all I have a csv file that I would like to remove duplicate lines based on 1st field and sort them by the 1st field. If there are more than 1 line which is same on the 1st field, I want to keep the first line of them and remove the rest. I think I have to use uniq or something, but I still... (8 Replies)
Discussion started by: refrain
8 Replies
SORT(1) 						      General Commands Manual							   SORT(1)

NAME
sort - sort a file of ASCII lines SYNOPSIS
sort [-bcdfimnru] [-tc] [-o name] [+pos1] [-pos2] file ... OPTIONS
-b Skip leading blanks when making comparisons -c Check to see if a file is sorted -d Dictionary order: ignore punctuation -f Fold upper case onto lower case -i Ignore nonASCII characters -m Merge presorted files -n Numeric sort order -o Next argument is output file -r Reverse the sort order -t Following character is field separator -u Unique mode (delete duplicate lines) EXAMPLES
sort -nr file # Sort keys numerically, reversed sort +2 -4 file # Sort using fields 2 and 3 as key sort +2 -t: -o out # Field separator is : sort +.3 -.6 # Characters 3 through 5 form the key DESCRIPTION
Sort sorts one or more files. If no files are specified, stdin is sorted. Output is written on standard output, unless -o is specified. The options +pos1 -pos2 use only fields pos1 up to but not including pos2 as the sort key, where a field is a string of characters delim- ited by spaces and tabs, unless a different field delimiter is specified with -t. Both pos1 and pos2 have the form m.n where m tells the number of fields and n tells the number of characters. Either m or n may be omitted. SEE ALSO
comm(1), grep(1), uniq(1). SORT(1)
All times are GMT -4. The time now is 09:52 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy