Sponsored Content
Top Forums Shell Programming and Scripting Filter uniq field values (non-substring) Post 302901379 by vgersh99 on Tuesday 13th of May 2014 02:19:35 PM
Old 05-13-2014
Quote:
Originally Posted by yifangt
I did not forget this discussion, the left challenge is the speed. The script by vgersh99 took ~45hours to finish the file of 76,235 rows. Probably awk is not the best choice to process big file. Thank you all anyway!
I don't think it's a matter of a 'tool of choice', but rather of an algorithm to deal with the cached/stored matches in order to minimize the 'full table scan' for each newly found row/line....
I couldn't think of an easy non-convoluted way of minimizing the full table scan...
Maybe others would have better ideas.....
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Uniq using only the first field

Hi all, I have a file that contains a list of codes (shown below). I want to 'uniq' the file using only the first field. Anyone know an easy way of doing it? Cheers, Dave ##### Input File ##### 1xr1 1xws 1yxt 1yxu 1yxv 1yxx 2o3p 2o63 2o64 2o65 1xr1 1xws 1yxt 1yxv 1yxx 2o3p 2o63 2o64... (8 Replies)
Discussion started by: Digby
8 Replies

2. UNIX for Dummies Questions & Answers

How to uniq third field in a file

Hi ; I have a question regarding the uniq command in unix How do I uniq 3rd field in a file ? original file : zoom coord 39 18652 39 18652 zoom coord 39 18653 39 18653 zoom coord 39 18818 39 18818 zoom coord 39 18840 39 18840 zoom coord 41 15096 41 15096 zoom... (1 Reply)
Discussion started by: babycakes
1 Replies

3. Shell Programming and Scripting

How to use uniq on a certain field?

How can I use uniq on a certain field or what else could I use? If I want to use uniq on the second field and the output would remove one of the lines with a 5. bob 5 hand jane 3 leg jon 4 head chris 5 lungs (1 Reply)
Discussion started by: Bandit390
1 Replies

4. Shell Programming and Scripting

filter the uniq record problem

Anyone can help for filter the uniq record for below example? Thank you very much Input file 20090503011111|test|abc 20090503011112|tet1|abc|def 20090503011112|test1|bcd|def 20090503011131|abc|abc 20090503011131|bbc|bcd 20090503011152|bcd|abc 20090503011151|abc|abc... (8 Replies)
Discussion started by: bleach8578
8 Replies

5. Shell Programming and Scripting

Uniq based on first field

Hi New to unix. I want to display only the unrepeated lines from a file using first field. Ex: 1234 uname1 status1 1235 uname2 status2 1234 uname3 status3 1236 uname5 status5 I used sort filename | uniq -u output: 1234 uname1 status1 1235 uname2 status2 1234 uname3 status3 1236... (10 Replies)
Discussion started by: venummca
10 Replies

6. Shell Programming and Scripting

Sort field and uniq

I have a flatfile A.txt 2012/12/04 14:06:07 |trees|Boards 2, 3|denver|mekong|mekong12 2012/12/04 17:07:22 |trees|Boards 2, 3|denver|mekong|mekong12 2012/12/04 17:13:27 |trees|Boards 2, 3|denver|mekong|mekong12 2012/12/04 14:07:39 |rain|Boards 1|tampa|merced|merced11 How do i sort and get... (3 Replies)
Discussion started by: sabercats
3 Replies

7. Shell Programming and Scripting

Printing uniq first field with the the highest second field

Hi All, I am searching for a script which will produce an output file with the uniq first field with the second field having highest value among all the duplicates.. The output file will produce only the uniqs which are duplicate 3 times.. Input file X 9 B 5 A 1 Z 9 T 4 C 9 A 4... (13 Replies)
Discussion started by: ailnilanjan
13 Replies

8. Shell Programming and Scripting

Grok filter to extract substring from path and add to host field in logstash

Hii, I am reading data from files by defining path as *.log etc, Files names are like app1a_test2_heep.log , cdc2a_test3_heep.log etc How to configure logstash so that the part of string that is string before underscore (app1a, cdc2a..) should be grepped and added to host field and... (7 Replies)
Discussion started by: Ravi Kishore
7 Replies

9. Shell Programming and Scripting

HELP - uniq values per column

Hi All, I am trying to output uniq values per column. see file below. can you please assist? Thank you in advance. cat names joe allen ibm joe smith ibm joe allen google joe smith google rachel allen google desired output is: joe allen google rachel smith ibm (5 Replies)
Discussion started by: Apollo
5 Replies

10. Shell Programming and Scripting

awk to update field using matching value in file1 and substring in field in file2

In the awk below I am trying to set/update the value of $14 in file2 in bold, using the matching NM_ in $12 or $9 in file2 with the NM_ in $2 of file1. The lengths of $9 and $12 can be variable but what is consistent is the start pattern will always be NM_ and the end pattern is always ;... (2 Replies)
Discussion started by: cmccabe
2 Replies
Table(3)						User Contributed Perl Documentation						  Table(3)

NAME
Tk::Table - Scrollable 2 dimensional table of Tk widgets SYNOPSIS
use Tk::Table; $table = $parent->Table(-rows => number, -columns => number, -scrollbars => anchor, -fixedrows => number, -fixedcolumns => number, -takefocus => boolean); $widget = $table->Button(...); $old = $table->put($row,$col,$widget); $old = $table->put($row,$col,"Text"); # simple Label $widget = $table->get($row,$col); $cols = $table->totalColumns; $rows = $table->totalRows; $table->see($widget); $table->see($row,$col); ($row,$col) = $table->Posn($widget); DESCRIPTION
Tk::Table is an all-perl widget/geometry manager which allows a two dimensional table of arbitary perl/Tk widgets to be displayed. Entries in the Table are simply ordinary perl/Tk widgets. They should be created with the Table as their parent. Widgets are positioned in the table using: $table->put($row,$col,$widget) If $widget is not a reference it is treated as a string, and a Lable widget is created with the string as its text. All the widgets in each column are set to the same width - the requested width of the widest widget in the column. Likewise, all the widgets in each row are set to the same height - the requested height of the tallest widget in the column. A number of rows and/or columns can be marked as 'fixed' - and so can serve as 'headings' for the remainder the rows which are scrollable. The requested size of the table as a whole is such that the number of rows specified by -rows (default 10), and number of columns specified by -columns (default 10) can be displayed. If the Table is told it can take the keyboard focus then cursor and scroll keys scroll the displayed widgets. The Table will create and manage its own scrollbars if requested via -scrollbars. The table can be emptied using $table->clear the widgets which were in the table are destroyed. The Tk::Table widget is derived from a Tk::Frame, so inherits all its configure options. BUGS
/ Snags / Possible enhancements o Very large Tables consume a lot of X windows. o No equivalent of pack's -anchor/-pad etc. options SEE ALSO
Tk::grid, Tk::HList, Tk::TableMatrix, Tk::MListbox, Tk::Columns perl v5.16.3 2014-06-10 Table(3)
All times are GMT -4. The time now is 04:13 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy