Fast processing(mv command) of 1 million+ files using find, mv and xargs Post: 302789043

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Top Forums Shell Programming and Scripting Fast processing(mv command) of 1 million+ files using find, mv and xargs Post 302789043 by agentgrecko on Wednesday 3rd of April 2013 02:15:58 AM

04-03-2013

Registered User

Fast processing(mv command) of 1 million+ files using find, mv and xargs

Hi, I'd like to ask if anybody can help improve my code to move 1 million+ files from a directory to another:

Code:

find /source/dir -name file* -type f | xargs -I '{}' mv {} /destination/dir

I learned this line of code from this forum as well and it works fine. However, file movement is kinda slow; about 1-2 files per second. At this rate, it may take days to move the files. I have not much background yet about xargs, so I was wondering if there could be a faster way to accomplish this process.

Here are some more details:
-OS is HP-UX.
-The files in /source/dir are continually being added.
-Size per file is around 300-1000kb.
-Filename pattern includes YYYYMMDD date (might prove useful for batch processing).
-The mv* command is already encountering "arg list too long," hence the use of find/xargs.
-/source/dir has no sub directories.
-After moving the files, I would later divide/mv then into different dirs corresponding to their YYYYMMDD date.

Hope the above info helps. Any advise would be greatly appreciated as well.

Thank you.

agentgrecko

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shtool-mkshadow

SHTOOL-MKSHADOW.TMP(1)					      GNU Portable Shell Tool					    SHTOOL-MKSHADOW.TMP(1)

NAME

       shtool-mkshadow - GNU shtool create shadow tree using symlinks

SYNOPSIS

       shtool mkshadow [-v|--verbose] [-t|--trace] [-a|--all] src-dir dst-dir

DESCRIPTION

       This command creates a shadow tree of src-dir under dst-dir by recreating the directory hierarchy of src-dir under dst-dir and by creating
       the files of src-dir by linking them into the corresponding directories under dst-dir via symbolic links. When src-dir can be reached via
       relative paths from dst-dir, relative symbolic links are used, too. This high-level functionality is originally designed for developers to
       create copies of source trees.

OPTIONS

       The following command line options are available.

       -v, --verbose
	   Display some processing information.

       -t, --trace
	   Enable the output of the essential shell commands which are executed.

       -a, --all
	   Really shadow all files and directories in src-dir. Default is to skip CVS related files and directories, backup files, object files,
	   etc.

EXAMPLE

	#   shell script
	shtool mkshadow -v -a . /tmp/shadow

HISTORY

       The GNU shtool mkshadow command was originally written by Ralf S.  Engelschall <rse@engelschall.com> in 1998 for Apache. It was later
       revised and taken over into GNU shtool.

SEE ALSO

       shtool(1), ln(1).

18-Jul-2008							   shtool 2.0.8 					    SHTOOL-MKSHADOW.TMP(1)