Move files from one directory to another in chunks Post: 303002302

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Top Forums Shell Programming and Scripting Move files from one directory to another in chunks Post 303002302 by hburnswell on Monday 21st of August 2017 11:46:49 PM

08-22-2017

Registered User

Move files from one directory to another in chunks

All,

I have an application that is not working properly and the company is 'in the process' of fixing it. In the meantime, I want to write a bash script work-around. However, what I thought was going to be simple is seemingly not.

Need:

- Move files from one directory to another in chunks.

If I move all the files at once the system resources are heavily consumed and the application suffers. The source directory ($dir1) will contain any number of files (100's or 1000's) at any given time. So, I'd like to do something like:

Code:

if [ "$(ls -A $dir1) ]; then

	find $dir1 -maxdepth 1 -type f > output.txt

	<loop through output.txt moving x amount of files at a time until directory empty>

	mv `head -100 output.txt` $dir2

else

	echo "no files to move.."

fi

I know I can accomplish what I need with a brute force creation of many files to read from but there must be a more sophisticated way to do it.

Is there way to drop the list of files into an array and do something like:

Code:

mv $files[1-100] $dir2
mv $files[101-200] $dir2

I need to find a usable number of files to move at a time (could be 100, 5000, 10000) while not knowing how many files could be in $dir1 at any given time.

Any guidance is greatly appreciated.

TIA,

Herb

Last edited by rbatte1; 08-22-2017 at 06:26 AM.. Reason: Added CODE tags

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vifm

VIFM(1) 							   File Manager 							   VIFM(1)

NAME

       vifm - a ncurses based file manager with vi like keybindings

SYNOPSIS

       vifm [ options ] [ dir1 [ dir2 ]]

DESCRIPTION

       This  manual  page  documents briefly the vifm file manager.  This manual page was written for the Debian distribution because the original
       program does not have a manual page.
       vifm is a ncurses based file manager with vi like keybindings.  If you use vi, vifm gives you complete keyboard	control  over  your  files
       without having to learn a new set of commands.
       For full documentation, visit the doc directory. A better man page may follow later.

OPTIONS

       These  programs	follow	the  usual  GNU  command  line	syntax, with long options starting with two dashes (`-').  A summary of options is
       included below.
       The optional argument dir1 opens an initial directory in the left pane, the dir2 another one for the right pane	respectively.  If  one	or
       both are missing, the current working directory is used.

       --help Show summary of options.

       --version
	      Show version of program.

SEE ALSO

       vi(1),

AUTHOR

       This manual page was written by Edelhard Becker <becker@edelhard.de>, for the Debian GNU/Linux system (but may be used by others).

Edelhard Becker 						  August 27, 2002							   VIFM(1)