Sponsored Content
Full Discussion: Speed of mv vs. cp
Top Forums UNIX for Dummies Questions & Answers Speed of mv vs. cp Post 60742 by GMMike on Friday 21st of January 2005 01:25:02 AM
Old 01-21-2005
Speed of mv vs. cp

Hi,
Is mv (move) command quicker than cp (copy command)?

I have large files and I want to know if mv actually copy the data to a new file then deletes the old or whether it just alters information the file system without physically moving data - Unfortuanately I don't have large files to test with...

Thanks.

GMMIKE
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Speed it up!

I wonder, are there any "tricks" to increase my server's access time in general? (4 Replies)
Discussion started by: pappous
4 Replies

2. HP-UX

ftp speed

Background; FTP-ing a small 210K file to a HP7410 attached to a EVA500 the averaging speed 400KB/s FTP-ing a small 210K file to a K570 the average speed is 4500KB/s FTP-ing a 31MB file to a HP7410 attached to a EVA 5000 the average speed is 5500KB/s FTP-ing a 31MB file to a K570 the average... (3 Replies)
Discussion started by: ottof
3 Replies

3. Filesystems, Disks and Memory

dmidecode, RAM speed = "Current Speed: Unknown"

Hello, I have a Supermicro server with a P4SCI mother board running Debian Sarge 3.1. This is the "dmidecode" output related to RAM info: RAM speed information is incomplete.. "Current Speed: Unknown", is there anyway/soft to get the speed of installed RAM modules? thanks!! Regards :)... (0 Replies)
Discussion started by: Santi
0 Replies

4. Shell Programming and Scripting

Optimizing for a Speed-up

How would one go about optimizing this current .sh program so it works at a more minimal time. Such as is there a better way to count what I need than what I have done or better way to match patterns in the file? Thanks, #declare variables to be used. help=-1 count=0 JanCount=0 FebCount=0... (3 Replies)
Discussion started by: switch
3 Replies

5. Shell Programming and Scripting

Processor and Its speed

Hi I need a command to know how many processors are available and what is their speed in UNIX. Thanks (2 Replies)
Discussion started by: diksha2207
2 Replies

6. Filesystems, Disks and Memory

data from blktrace: read speed V.S. write speed

I analysed disk performance with blktrace and get some data: read: 8,3 4 2141 2.882115217 3342 Q R 195732187 + 32 8,3 4 2142 2.882116411 3342 G R 195732187 + 32 8,3 4 2144 2.882117647 3342 I R 195732187 + 32 8,3 4 2145 ... (1 Reply)
Discussion started by: W.C.C
1 Replies

7. Shell Programming and Scripting

How can i speed this script up?

Hi, Im quite new to scripting and would like a bit of assistance with trying to speed up the following script. At the moment it is quite slow.... Any way to improve it? total=111120 while do total=`expr $total + 1` INCREMENT=$total firstline = "blablabla" secondline = "blablabla"... (5 Replies)
Discussion started by: brunlea
5 Replies

8. Programming

malloc vs new speed

Which one is faster among malloc and new? My understanding is that since new also has to call constructors after allocating memory it must be slower than malloc. Am I correct? (1 Reply)
Discussion started by: rupeshkp728
1 Replies

9. Shell Programming and Scripting

Speed Up Grep

Hi, I have to grep string from 20 - 30 files each carries 200 - 300 MB size and append to the file. How to speed the grepping time. cat catalina.out_2012_01_01 | grep "xxxxx" >> backup.txt PLZ, Suggest me, Regards, Nanthagopal A (5 Replies)
Discussion started by: nanthagopal
5 Replies

10. Shell Programming and Scripting

Help me with speed up this script

hey guys i have a perl script wich use to compare hashes but it tookes a long time to do that so i wich i will have the soulition to do it soo fast he is the code <redacted> (1 Reply)
Discussion started by: benga
1 Replies
MRENAME(1)						      General Commands Manual							MRENAME(1)

NAME
mrename - program to rename files SYNOPSIS
mrename 'pattern' prefix [option] DESCRIPTION
This manual page documents briefly the mrename command. This manual page was written for the Debian GNU/Linux distribution because the original program does not have a manual page. mrename is a tool for easy and automatic renaming of many files. The 'pattern' is the pattern to search files to rename (quoted to avoid that bash resolve it), and prefix is the prefix that will be added to the name of each file. The two alternative options for copying or moving files in the new name are explained below. All parameters are needed, and you have to stay and launch the script in the same direc- tory of the files to be renamed. The program should be able to write in this directory. OPTIONS
There are only the following three options. -c The option -c will copy each file with the new filename. -m The option -m will move each file in the new filename. -h Display help. EXAMPLE
If you have a directory with two jpeg images prof.jpg and forp.jpg and you want to add them a prefix like item0, item1 etc.. (that is item0prof.jpg, item1forp.jpg etc..) do this: cd /path/to/the/images mrename '*.jpg' item -c to copy each matching file into another with the new name mrename '*.jpg' item -m to rename each file without keeping a copy with the previous name Word-Wide-Web: http://alfalinux.sourceforge.net/mrename.php3 AUTHOR
: Giancarlo -rofus- Erra e-mail: rofus@mindless.com This manual page was written by Dr. Guenter Bechly <gbechly@debian.org>, for the Debian GNU/Linux system (but may be used by others). It is distributed under the GPL just like mrename itself. October 22, 2000 MRENAME(1)
All times are GMT -4. The time now is 12:37 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy