Sponsored Content
Top Forums UNIX for Dummies Questions & Answers [SOLVED] awk: matching degenerate patterns Post 302706259 by Corona688 on Wednesday 26th of September 2012 11:14:03 AM
Old 09-26-2012
You can use the NR==FNR trick to avoid needing your own read-loop for the first file. FNR is the line number in the file, NR is the total number of lines; they are only the same when you're reading the very first file. (Or, I suppose, if the very first file turns out to be empty.) So when in the first file, handle the line then do next so the code following doesn't try and use it too.

Code:
awk 'NR==FNR { K[$1,$2,$3]=$0; next } ($1 SUBSEP $2 SUBSEP $3) in K' a b

This User Gave Thanks to Corona688 For This Post:
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

matching 3 patterns in shell script

IN a file I need to check for 3 patterns if all the 3 patterns are in the file. I need to send out an email. All this needs to be done in korn shell script. Please advise. (1 Reply)
Discussion started by: saibsk
1 Replies

2. Shell Programming and Scripting

AWK: matching patterns in 2 different files

In a directory, there are two different file extensions (*.txt and *.xyz) having similar names of numerical strings (*). The (*.txt) contains 5000 multiple files and the (*.xyz) also contains 5000 multiple files. Each of the files has around 4000 rows and 8 columns, with several unique string... (5 Replies)
Discussion started by: asanjuan
5 Replies

3. Shell Programming and Scripting

Matching patterns

I have a file name in $f. If $f has "-" at the beginning, or "=", or does not have extension ".ry" or ".xt" or ".dat" then cerr would not be empty. Tried the following but having some problems. set cerr = `echo $f | awk '/^-|=|!.ry|!.xt|!.dat/'` (4 Replies)
Discussion started by: kristinu
4 Replies

4. Shell Programming and Scripting

matching patterns inside a condition in awk

I have the following in an awk script. I want to do them on condition that: fext == "xt" FNR == NR { />/ && idx = ++i $2 || val = $1 next } FNR in idx { v = val] } { !/>/ && srdist = abs($1 - v) } />/ || NF == 2 && srdist < dsrmx {... (1 Reply)
Discussion started by: kristinu
1 Replies

5. Shell Programming and Scripting

[Solved] Sed/awk print between patterns the first occurrence

Guys, I am trying the following: i have a log file of a webbap which logs in the following pattern: 2011-08-14 21:10:04,535 blablabla ERROR blablabla bla bla bla bla 2011-08-14 21:10:04,535 blablabla ERROR blablabla bla bla bla ... (6 Replies)
Discussion started by: ppolianidis
6 Replies

6. Emergency UNIX and Linux Support

[Solved] AWK to parse adjacent matching lines

Hi, I have an input file like F : 0.1 : 0.002 P : 0.3 : 0.004 P : 0.5 : 0.008 P : 0.1 : 0.005 L : 0.05 : 0.02 P: 0.1 : 0.006 P : 0.01 : 0.08 F : 0.02 : 0.08 Expected output: (2 Replies)
Discussion started by: vasanth.vadalur
2 Replies

7. UNIX for Dummies Questions & Answers

Search and extract matching patterns

%%%%% (9 Replies)
Discussion started by: lucasvs
9 Replies

8. Shell Programming and Scripting

[Solved] HP-UX awk sub multiple patterns

Hi, I am using sub to remove blank spaces and one pattern(=>) from the input string. It works fine when I am using two sub functions for the same. However it is giving error while I am trying to remove both spaces and pattern using one single sub function. Working: $ echo " OK => " |awk... (2 Replies)
Discussion started by: sai_2507
2 Replies

9. Shell Programming and Scripting

awk extract strings matching multiple patterns

Hi, I wasn't quite sure how to title this one! Here goes: I have some already partially parsed log files, which I now need to extract info from. Because of the way they are originally and the fact they have been partially processed already, I can't make any assumptions on the number of... (8 Replies)
Discussion started by: chrissycc
8 Replies

10. Shell Programming and Scripting

Delete patterns matching

Delete patterns matching OS version: RHEL 7.3 Shell : Bash I have a file like below (pattern.txt). I need to delete all lines starting with the following words (words separated by comma below) and ) character. LOGGING, NOCOMPRESS, TABLESPACE , PCTFREE, INITRANS, MAXTRANS, STORAGE,... (3 Replies)
Discussion started by: John K
3 Replies
SPLFILEOBJECT.FPUTCSV(3)						 1						  SPLFILEOBJECT.FPUTCSV(3)

SplFileObject::fputcsv - Write a field array as a CSV line

SYNOPSIS
public int SplFileObject::fputcsv (array $fields, [string $delimiter = ","], [string $enclosure = '"'], [string $escape = " DESCRIPTION
Writes the $fields array to the file as a CSV line. PARAMETERS
o $fields - An array of values. o $delimiter - The optional $delimiter parameter sets the field delimiter (one character only). o $enclosure - The optional $enclosure parameter sets the field enclosure (one character only). o $escape - The optional $escape parameter sets the escape character (one character only). RETURN VALUES
Returns the length of the written string or FALSE on failure. Returns FALSE, and does not write the CSV line to the file, if the $delimiter or $enclosure parameter is not a single character. ERRORS
/EXCEPTIONS An E_WARNING level error is issued if the $delimiter or $enclosure parameter is not a single character. CHANGELOG
+--------------+-------------------------------+ | Version | | | | | | | Description | | | | +--------------+-------------------------------+ |5.5.21, 5.6.5 | | | | | | | Added the $escape parameter. | | | | +--------------+-------------------------------+ EXAMPLES
Example #1 SplFileObject::fputcsv example <?php $list = array ( array('aaa', 'bbb', 'ccc', 'dddd'), array('123', '456', '789'), array('"aaa"', '"bbb"') ); $file = new SplFileObject('file.csv', 'w'); foreach ($list as $fields) { $file->fputcsv($fields); } ?> The above example will write the following to file.csv: aaa,bbb,ccc,dddd 123,456,789 """aaa""","""bbb""" SEE ALSO
fputcsv(3), SplFileObject::fgetcsv. PHP Documentation Group SPLFILEOBJECT.FPUTCSV(3)
All times are GMT -4. The time now is 08:54 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy