Sponsored Content
Top Forums UNIX for Dummies Questions & Answers Delete rows with unique value for specific column Post 302655467 by krsnadasa on Wednesday 13th of June 2012 08:31:30 AM
Old 06-13-2012
Delete rows with unique value for specific column

Hi Ranga,

Good One but can you please compeltly how this logic works?

Code:
awk 'BEGIN{FS="|";}{a[$3]++;if(a[$3]==2)print v[$3] ORS $0;if(a[$3]>2)print;v[$3]=$0;}' file

Thanks
Krsna
This User Gave Thanks to krsnadasa For This Post:
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Print rows, having pattern in specific column...

Hello all, :) I have a pattern file some what like this, cd003 cd005 cd007 cd008 and input file like this, abc cd001 cd002 zca bca cd002 cd003 cza cba cd003 cd004 zca bac cd004 cd005 zac cba cd005 cd006 acz acb cd006 cd007 caz cab cd007 ... (25 Replies)
Discussion started by: admax
25 Replies

2. UNIX for Dummies Questions & Answers

Delete all rows that contain a specific string (text)

Hi, I have a text file and I want to delete all rows that contain a particular string of characters. How do I go about doing that? Thanks! (9 Replies)
Discussion started by: evelibertine
9 Replies

3. Shell Programming and Scripting

Delete unique rows - optimize script

Hi all, I have the following input - the unique row key is 1st column cat file.txt A response C request C response D request C request C response E request The desired output should be C request (7 Replies)
Discussion started by: varu0612
7 Replies

4. Shell Programming and Scripting

Print unique names in each row of a specific column using awk

Is it possible to remove redundant names in the 4th column? input cqWE 100 200 singapore;singapore AZO 300 400 brazil;america;germany;ireland;germany .... .... output cqWE 100 200 singapore AZO 300 400 brazil;america;germany;ireland (4 Replies)
Discussion started by: quincyjones
4 Replies

5. UNIX for Dummies Questions & Answers

Deleting rows where the value in a specific column match

Hi, I have a tab delimited text file where I want to delete all rows that have the same string for column 1. How do I go about doing that? Thanks! Example Input: aa 1 aa 2 aa 3 bb 4 bc 5 bb 6 cd 8 Output: bc 5 cd 8 (4 Replies)
Discussion started by: evelibertine
4 Replies

6. Shell Programming and Scripting

Print unique names in a specific column using awk

Is it possible to modify file like this. 1. Remove all the duplicate names in a define column i.e 4th col 2. Count the no.of unique names separated by ";" and print as a 5th col thanx in advance!! Q input c1 30 3 Eh2 c10 96 3 Frp c41 396 3 Ua5;Lop;Kol;Kol c62 2 30 Fmp;Fmp;Fmp ... (5 Replies)
Discussion started by: quincyjones
5 Replies

7. Shell Programming and Scripting

Converting Single Column into Multiple rows, but with strings to specific tab column

Dear fellows, I need your help. I'm trying to write a script to convert a single column into multiple rows. But it need to recognize the beginning of the string and set it to its specific Column number. Each Line (loop) begins with digit (RANGE). At this moment it's kind of working, but it... (6 Replies)
Discussion started by: AK47
6 Replies

8. Shell Programming and Scripting

Extract lines with unique value using a specific column

Hi there, I need a help with extracting data from tab delimited file which look like this #CHROM POS ID REF ALT Human Cow Dog Mouse Lizard chr2 3033 . G C 0/0 0/0 0/0 1/1 0/0 chr3 35040 . G T 0/0 0/0 ./. 1/1 0/1 chr4 60584 . T G 1/1 1/1 0/1 1/1 0/0 chr10 7147815 . G A 0/0 1/1 0/0 0/0... (9 Replies)
Discussion started by: houkto
9 Replies

9. Shell Programming and Scripting

Count frequency of unique values in specific column

Hi, I have tab-deliminated data similar to the following: dot is-big 2 dot is-round 3 dot is-gray 4 cat is-big 3 hot in-summer 5 I want to count the frequency of each individual "unique" value in the 1st column. Thus, the desired output would be as follows: dot 3 cat 1 hot 1 is... (5 Replies)
Discussion started by: owwow14
5 Replies

10. UNIX for Dummies Questions & Answers

Removing rows that contain non-unique column entry

Background: I have a file of thousands of potential SSR primers from Batch Primer 3. I can't use primers that will contain the same sequence ID or sequence as another primer. I have some basic shell scripting skills, but not enough to handle this. What you need to know: I need to remove the... (1 Reply)
Discussion started by: msatseqs
1 Replies
fmt(1)							      General Commands Manual							    fmt(1)

NAME
fmt - format text SYNOPSIS
width] [file...] DESCRIPTION
The command is a simple text formatter that fills and joins lines to produce output lines of (up to) the number of characters specified in the width option. The default width is 72. concatenates the arguments. If none are given, formats text from the standard input. Blank lines are preserved in the output, as is the spacing between words. does not fill lines beginning with a period for compatibility with Nor does it fill lines starting with Indentation is preserved in the output and input lines with differing indentation are not joined (unless is used). can also be used as an in-line text filter for the command: reformats the text between the cursor location and the end of the paragraph. Options recognizes the following options: Crown margin mode. Preserve the indentation of the first two lines within a paragraph and align the left margin of each subsequent line with that of the second line. This is useful for tagged paragraphs. Split lines only. Do not join short lines to form longer ones. This prevents sample lines of code, and other such "formatted" text, from being unduly combined. Fill output lines to up to width columns. WARNINGS
The width option is acceptable for BSD compatibility, but it may go away in future releases. SEE ALSO
nroff(1), vi(1). fmt(1)
All times are GMT -4. The time now is 07:31 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy