Find a list of files in directory, move to new, allow duplicates Post: 302911988

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Top Forums UNIX for Dummies Questions & Answers Find a list of files in directory, move to new, allow duplicates Post 302911988 by bakunin on Tuesday 5th of August 2014 04:29:00 AM

08-05-2014

Registered User

Quote:

Originally Posted by jim mcnamara

Code:

find /path/to/files -type f  | grep -Ff text_file_with_file_names > outputfile

while read filename
do
  mv $filename   /path/to/somewhere/
done <outputfile

That said - DO NOT agglomerate zillions of user data files adhoc in one file tree.
It is completely possible to have parked those files into meaningful directory names - i.e., the text you are using as a key. Then you can simply look for a directory and go from there. Pre-planning beats kludge like this every time.

Concur! Especially for the last Sentence!

Quote:

Originally Posted by jim mcnamara

PS: because you want to run this ONE time there is a huge performance penalty:
grep -Ff filename has to scan the entire 300 lines of filename for every file it finds. And since you seem to have large numbers of files be prepared to wait.

True. Here is my take at it, based on yours. The rationale is that after the first scan the inode list is cached in memory and the next finds will go a lot faster:

Code:

while read FILEMASK ; do
     find /path/to/sourcedir -type f -name "*${FILEMASK}*" |\
          while read MOVEFILE ; do
               FNAME="${MOVEFILE##*/}"
               if [ -f "/path/to/targetdir/$FNAME" ] ; then
                    mv "$MOVEFILE" "/path/to/targetdir/${FNAME}.$$"
               else
                    mv "$MOVEFILE" "/path/to/targetdir"
               fi
          done
done < /path/to/list.of.filemasks

Note that no security provisions are put into place: checks for exhausted diskspace, successful move operation, etc.. are all missing and you should add them before putting this sketch into a fire-and-forget script.

I hope this helps.

bakunin

bakunin

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file::find::object::rule::procedural

File::Find::Object::Rule::Procedural(3pm)		User Contributed Perl Documentation		 File::Find::Object::Rule::Procedural(3pm)

NAME

       File::Find::Object::Rule::Procedural - File::Find::Object::Rule's procedural interface

SYNOPSIS

	 use File::Find::Object::Rule;

	 # find all .pm files, procedurally
	 my @files = find(file => name => '*.pm', in => @INC);

DESCRIPTION

       In addition to the regular object-oriented interface, File::Find::Object::Rule provides two subroutines for you to use.

       "find( @clauses )"
       "rule( @clauses )"
	   "find" and "rule" can be used to invoke any methods available to the OO version.  "rule" is a synonym for "find"

       Passing more than one value to a clause is done with an anonymous array:

	my $finder = find( name => [ '*.mp3', '*.ogg' ] );

       "find" and "rule" both return a File::Find::Object::Rule instance, unless one of the arguments is "in", in which case it returns a list of
       things that match the rule.

	my @files = find( name => [ '*.mp3', '*.ogg' ], in => $ENV{HOME} );

       Please note that "in" will be the last clause evaluated, and so this code will search for mp3s regardless of size.

	my @files = find( name => '*.mp3', in => $ENV{HOME}, size => '<2k' );
							   ^
							   |
		      Clause processing stopped here ------/

       It is also possible to invert a single rule by prefixing it with "!"  like so:

	# large files that aren't videos
	my @files = find( file	  =>
			  '!name' => [ '*.avi', '*.mov' ],
			  size	  => '>20M',
			  in	  => $ENV{HOME} );

AUTHOR

       Richard Clamp <richardc@unixbeard.net>

COPYRIGHT

       Copyright (C) 2003 Richard Clamp.  All Rights Reserved.

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSO

       File::Find::Object::Rule

perl v5.14.2							    2012-05-05				 File::Find::Object::Rule::Procedural(3pm)