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Full Discussion: Running rename command on large files and make it faster
Top Forums Shell Programming and Scripting Running rename command on large files and make it faster Post 302549660 by Corona688 on Tuesday 23rd of August 2011 02:55:29 PM
Old 08-23-2011
Quote:
Originally Posted by shoaibjameel123
Hi All,

I have some 80,000 files in a directory which I need to rename. Below is the command which I am currently running and it seems, it is taking fore ever to run this command.
If you can install mmv, you can do mmv '*.xml' '#1.dat' which will be faster than the version with parallel, because it doesn't need to run 80,000 separate instances of mv.

I don't think renaming 80,000 files is ever going to be fast, though. That's 80,000 file tree operations.
This User Gave Thanks to Corona688 For This Post:
shoaibjameel123
 

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LEARN ABOUT OPENSOLARIS

gvfs-rename

gvfs-rename(1)							   User Commands						    gvfs-rename(1)

NAME

       gvfs-rename - change the name of a file or directory using the VFS system

SYNOPSIS

       gvfs-rename source-URI new-name

DESCRIPTION

       gvfs-rename changes the name of a file or directory, using the virtual file system.

OPERANDS

       The following operands are supported:

       source-URI	       Specifies the source file location in standard URI format.

       new-name 	       Specifies the new name for file or directory.

EXAMPLES

       Example 1: Rename a Local HTML File

       example%
	       gvfs-rename file:///home/user/index.html file:///home/user/index.html.old

ENVIRONMENT VARIABLES

       See environ(5) for descriptions of the following environment variables: NLSPATH.

EXIT STATUS

       The exit value 0 is returned regardless of success or failure.

FILES

       The following files are used by this application:

       /usr/bin/gvfs-rename    Executable to rename a file using the GVFS library

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWgnome-gvfs		   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |Volatile			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       gvfs-cat(1),  gvfs-copy(1),  gvfs-move(1), gvfs-info(1), gvfs-less(1), gvfs-ls(1), gvfs-mkdir(1) gvfs-monitor-dir(1), gvfs-monitor-file(1),
       gvfs-mount(1), gvfs-copy(1), gvfs-open(1), gvfs-rm(1), gvfs-save(1), gvfs-trash(1), gvfs-tree(1), attributes(5), environ(5)

NOTES

       Written by Alvaro Lopez Ortega, Sun Microsystems Inc., 2008.

SunOS 5.11							    30 May 2008 						    gvfs-rename(1)
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