Sponsored Content
Top Forums Shell Programming and Scripting Merge multiple lines in same file with common key using awk Post 302735725 by protosd on Monday 26th of November 2012 04:20:22 AM
Old 11-26-2012
Quote:
Originally Posted by elixir_sinari
Code:
awk -F, 'NR!=1 && p1!=$1{print prev;prev=""}

prev seems to magically appear where you say print prev, but where do you assign its contents?

Is it somehow defaulting to $0 ?
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

merge multiple lines from flat file

Hi, I have a tab delimited flat file like this: 189 Guide de lutilisateur sur lappel conférence à trois au moyen d'adaptateurs téléphoniques <TABLE><TBODY><TR><TD><DIV class=subheader>La fonction Appel conférence à trois </DIV></TD> \ <TD><?php print $navTree;?> vous permet de tenir un appel... (4 Replies)
Discussion started by: hnhegde
4 Replies

2. Shell Programming and Scripting

merge based on common, awk help

All, $ cat x.txt z 11 az x 12 ax y 13 ay $ cat y.txt ay TT ax NN Output required: y 13 ay TT x 12 ax NN (3 Replies)
Discussion started by: jkl_jkl
3 Replies

3. Shell Programming and Scripting

Merge lines in a file with Awk - incorrect output

Hi, I would like: FastEthernet0/0 is up, line protocol is up 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored 0 output errors, 0 collisions, 0 interface resets Serial1/0:0 is up, line protocol is up 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 0... (14 Replies)
Discussion started by: mv652
14 Replies

4. Shell Programming and Scripting

Using Perl to Merge Multiple Lines in a File

I've hunted and hunted but nothing seems to apply to what I need. Any help will be much appreciated! My input file looks like (Unix): marker,allele1,allele2 RS1002244,1,1 RS1002244,1,3 RS1002244,3,3 RS1003719,2,2 RS1003719,2,4 RS1003719,4,4 Most markers are listed 3 times but a few... (2 Replies)
Discussion started by: Peggy White
2 Replies

5. Shell Programming and Scripting

"Join" or "Merge" more than 2 files into single output based on common key (column)

Hi All, I have working (Perl) code to combine 2 input files into a single output file using the join function that works to a point, but has the following limitations: 1. I am restrained to 2 input files only. 2. Only the "matched" fields are written out to the "matched" output file and... (1 Reply)
Discussion started by: Katabatic
1 Replies

6. Shell Programming and Scripting

Gawk / Awk Merge Lines based on Key

Hi Guys, After windows died on my netbook I installed Lubuntu and discovered Gawk about a month ago. After using Excel for 10+ years I'm amazed how quick and easily Gawk can process data but I'm stuck with a little problem merging data from multiple lines. I'm an SEO Consultant and provide... (9 Replies)
Discussion started by: Jamesfirst
9 Replies

7. UNIX for Dummies Questions & Answers

Writing a loop to merge multiple files by common column

I have 100 data files labelled 250.1.txt through 250.100.txt. The second column of the data files partially match (there is about %90 overlap). Each data file has 4 columns. I want the merge all these text files by the matching values in the second column. In the output, the first column should... (1 Reply)
Discussion started by: evelibertine
1 Replies

8. Shell Programming and Scripting

Merge multiple files with common header

Hi all, Say i have multiple files x1 x2 x3 x4, all with common header (date, time, year, age),, How can I merge them to one singe file "X" in shell scripting Thanks for your suggestions. (2 Replies)
Discussion started by: msarguru
2 Replies

9. UNIX for Dummies Questions & Answers

Merge selective columns from files based on common key

Hi, I am trying to selectively merge two files based on keys reported in the 1st column. File1: #file1-header1 file1-header2 111 qwe rtz uio 198 asd fgh jkl 165 yxc 789 poi uzt rew 89 lkj File2: #file2-header2 file2-header2 165 ghz nko2 ... (2 Replies)
Discussion started by: dovah
2 Replies

10. Shell Programming and Scripting

Join and merge multiple files with duplicate key and fill void columns

Join and merge multiple files with duplicate key and fill void columns Hi guys, I have many files that I want to merge: file1.csv: 1|abc 1|def 2|ghi 2|jkl 3|mno 3|pqr file2.csv: (5 Replies)
Discussion started by: yjacknewton
5 Replies
SVK::Merge::Info(3)					User Contributed Perl Documentation				       SVK::Merge::Info(3)

NAME
SVK::Merge::Info - Container for merge ticket information SYNOPSIS
use SVK::Merge::Info; my $minfo = SVK::Merge::Info->new( $svk_merge_property ); DESCRIPTION
An "SVK::Merge::Info" object represents a collection of merge tickets, including repository UUID, path and revision. CONSTRUCTORS
new Takes a single argument with the value of an "svk:merge" property. METHODS
add_target Add a single SVK::Target::Universal or SVK::Path to the collection of merge tickets. del_target Remove a single SVK::Target::Universal or SVK::Path from the collection of merge tickets. remove_duplicated Takes a single SVK::Merge::Info object as an argument. Removes merge tickets which are present in the argument and for which the argument's revision is less than or equal to our revision. subset_of Takes a single SVK::Merge::Info object as an argument. Returns true if our set of merge tickets is a subset of the argument's merge tickets. Otherwise, returns false. is_equal Takes a single SVK::Merge::Info object as an argument. Returns true if our set of merge tickets is equal to argument's. Otherwise, returns false. union Return a new SVK::Merge::Info object representing the union of ourself and the SVK::Merge::Info object given as the argument. resolve verbatim as_string Serializes this collection of merge tickets in a form suitable for storing as an svk:merge property. TODO
Document the merge and ticket tracking mechanism. SEE ALSO
SVK::Editor::Merge, SVK::Command::Merge, Star-merge from GNU Arch perl v5.10.0 2008-08-04 SVK::Merge::Info(3)
All times are GMT -4. The time now is 12:18 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy