Sponsored Content
Top Forums Shell Programming and Scripting Fastest way to list a file in a folder containing 800,000 files using wildcard Post 302213189 by jerardfjay on Wednesday 9th of July 2008 12:05:24 PM
Old 07-09-2008
Fastest way to list a file in a folder containing 800,000 files using wildcard

Hi,

I have a directory with possibly around 800,000 files in it.
What is the fastest way to list file(s) in this directory with a wildcard.

for example would

Code:
ls -1 *.abcdefg.Z

or

Code:
find . -name "*.abcdefg.Z"


be the fastest way to find all of the files that end with .abcdefg.Z in this directory with 800,000 files in it.
Any help or sugestion would be greatly appreciated.

Thx
Jerardfjay

Last edited by jerardfjay; 07-09-2008 at 01:07 PM.. Reason: better description of issue
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Find wildcard .shtml files in wildcard directories and removing them- How's it done?

I'm trying to figure out how to build a small shell script that will find old .shtml files in every /tgp/ directory on the server and delete them if they are older than 10 days... The structure of the paths are like this: /home/domains/www.domain2.com/tgp/ /home/domains/www.domain3.com/tgp/... (1 Reply)
Discussion started by: Neko
1 Replies

2. UNIX for Dummies Questions & Answers

Basic Q: getting list of all files of type within folder & subfolders

A painfully rudimentary UNIX question for somebody. I've been puzzling over this for the last hour but can't find the right command. I'm simply trying to get a list of all files - and their full paths - within a folder & subfolders which have extension .php and .js. That's it! No amount of... (1 Reply)
Discussion started by: AtomicPenguin
1 Replies

3. Shell Programming and Scripting

How list of files apart from *.class files in certain folder

Hi Friends How to list of all files in a particular directory structure, with out listing a particular file extn. I mean to say in a folder structure I have many files ..I want to list them with out *.class files. Please help Thanks Joy (3 Replies)
Discussion started by: itsjoy2u
3 Replies

4. UNIX for Dummies Questions & Answers

List certain file in a folder and make list

Hi, im having problem that frustate me today. there are list of file in a folder that i want to grab the folder /subject/items/ in this folder there are this file CREATE_SUBxxxx.xml UPDATE_SUBxxxx.xml DELETE_SUBxxxx.xml loginresponsexxxxx.xml core how can i grab all the file... (1 Reply)
Discussion started by: andrisetia
1 Replies

5. UNIX for Dummies Questions & Answers

how to search and list file with wildcard character

hi, I want to search all files in the current working direcotry and to print in comma (,) seperated output. But I have two patterns to search for. Files will be in ABC20100508.DAT format. Search should happen on the format (ABC????????.DAT) along with date(20100508). I can do a ls... (2 Replies)
Discussion started by: anandapani
2 Replies

6. Shell Programming and Scripting

Check folder existence using wildcard

Hi I would like to know how I can check whether there is one or more folders in the current directory which begins with e.g. 2011-11. Initially I figured that this could easily be done simply by: if ; then ... However if there is more than one folder which begins with 2011-11 then it... (1 Reply)
Discussion started by: aknu
1 Replies

7. Shell Programming and Scripting

List of files in a folder inclusive subfolder

Hi, I need to list the names of existing files in a specific folder. I have written a script for that, but the problem is, it is also picking up name of a subfolder that is there in that folder. I need only the list of files and not that subfolder. How to go about that ? Can anyone plz help... (2 Replies)
Discussion started by: Subhasis
2 Replies

8. Shell Programming and Scripting

How to copy all the contents of a list of files present in a folder to a particular file?

Hi All, I want to copy all the contents of a list of files in a folder to a particular file. i am using following command: cat dir/* >> newFile.txtIt's not working. Could you please help? Thanks, Pranav (3 Replies)
Discussion started by: Pranav Bhasker
3 Replies

9. Shell Programming and Scripting

Parse through ~21,000 Database DDL statements -- Fastest way to perform search, replace and insert

Hello All: We are looking to search through 2000 files with around 21,000 statements where we have to search, replace and insert a pattern based on the following: 1) Parse through the file and check for CREATE MULTISET TABLE or CREATE SET TABLE statements.....and they always end with ON... (5 Replies)
Discussion started by: madhunk
5 Replies

10. Shell Programming and Scripting

How to list and move files with spaces and wildcard?

I am writing a code that can move and archve all the files in a directory except the latest file based on file pattern provided in a controlfile. The filename is in the form of pattern. So basically we find the all the files of the pattern provided and archive all of them, leaving one latest file.... (3 Replies)
Discussion started by: Saanvi1
3 Replies
ENVEXT(1)						  The Canonical Csound Reference						 ENVEXT(1)

NAME
envext - Extracts the envelope of a file to a text file. . SYNTAX
envext [-flags] soundfile csound -U envext [-flags] soundfile INITIALIZATION
soundfile - Name of the input soundfile. The following flags are available for envext (The default values are stated in parenthesis): -o fnam Name of output filename (newenv) -w size (in seconds) of analysis window (0.25) The envext utility generates a text file containing time and amplitude pairs by finding the absolute peak within each window. EXAMPLE
Using the command (while in the manual directory): csound -U envext examples/mary.wav will produce the a text file containing the following: 0.000 0.000 0.000 0.000 0.250 0.000 0.500 0.000 0.750 0.000 1.249 0.170 1.499 0.269 1.530 0.307 1.872 0.263 2.056 0.304 2.294 0.241 2.570 0.216 2.761 0.178 3.077 0.011 3.251 0.001 3.500 0.000 Which shows the time for the peak amplitude within each measured window. CREDITS
Author: John ffitch 1995 AUTHORS
Barry Vercoe MIT Media Lab Author. Dan Ellis MIT Media Lab, Cambridge Massachussetts Author. COPYRIGHT
5.10 08/01/2011 ENVEXT(1)
All times are GMT -4. The time now is 10:01 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy