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Full Discussion: Converting Huge Archive into smaller ones
Top Forums Shell Programming and Scripting Converting Huge Archive into smaller ones Post 302247832 by rubin on Thursday 16th of October 2008 12:03:22 PM
Old 10-16-2008
Nice solution ...

and a few suggestions:
- You can consolidate all the commands in one script,
- and you can use the sleep command within the script, instead of setting up a cron process, running every 2 min,


checkAndGzip.sh

Code:
#!/bin/bash

#set -x


# Provide full path, so you can run the script from every dir.
cd /full/path/to/zipped_files

# Start unzipping the files, run it in the background so the files checking can start.
gunzip -c archive.tar.gz | tar -xvf -   &

# Start checking for the files, while the unzipping is happening. 
# Use a find ...| while read ... construction , because it doesn't break if the file name has white space in it.

 find . -name '*.extension' | while read FILE      2>/dev/null
  do
        temp=`lsof "$FILE" | awk 'NR>1 && $4 ~ "w"{ print $4 }'` ;
        
        if [ "$temp" = "" ]; then
                #Implies that the file is not in use
                #Initiate gzip on file
                gzip "$FILE";
        fi
    
        # Wait for 2 minutes.
        sleep 120

  done > output

Modify the code to fit any other requirement.
 

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LEARN ABOUT DEBIAN

archive::any

Archive::Any(3pm)					User Contributed Perl Documentation					 Archive::Any(3pm)

NAME

       Archive::Any - Single interface to deal with file archives.

SYNOPSIS

	 use Archive::Any;

	 my $archive = Archive::Any->new($archive_file);

	 my @files = $archive->files;

	 $archive->extract;

	 my $type = $archive->type;

	 $archive->is_impolite;
	 $archive->is_naughty;

DESCRIPTION

       This module is a single interface for manipulating different archive formats.  Tarballs, zip files, etc.

       new
	     my $archive = Archive::Any->new($archive_file);
	     my $archive = Archive::Any->new($archive_file, $type);

	   $type is optional.  It lets you force the file type in-case Archive::Any can't figure it out.

       extract
	     $archive->extract;
	     $archive->extract($directory);

	   Extracts the files in the archive to the given $directory.  If no $directory is given, it will go into the current working directory.

       files
	     my @file = $archive->files;

	   A list of files in the archive.

       mime_type
	    my $mime_type = $archive->mime_type();

	   Returns the mime type of the archive.

       is_impolite
	     my $is_impolite = $archive->is_impolite;

	   Checks to see if this archive is going to unpack into the current directory rather than create its own.

       is_naughty
	     my $is_naughty = $archive->is_naughty;

	   Checks to see if this archive is going to unpack outside the current directory.

DEPRECATED

       type
	     my $type = $archive->type;

	   Returns the type of archive.  This method is provided for backwards compatibility in the Tar and Zip plugins and will be going away
	   soon in favor of "mime_type".

PLUGINS

       For detailed information on writing plugins to work with Archive::Any, please see the pod documentation for Archive::Any::Plugin.

AUTHOR

       Clint Moore <cmoore@cpan.org>

AUTHOR EMERITUS

       Michael G Schwern

SEE ALSO

       Archive::Any::Plugin

SUPPORT

       You can find documentation for this module with the perldoc command.

	perldoc Archive::Any

       You can also look for information at:

       o   AnnoCPAN: Annotated CPAN documentation

	   <http://annocpan.org/dist/Archive-Any>

       o   CPAN Ratings

	   <http://cpanratings.perl.org/d/Archive-Any>

       o   RT: CPAN's request tracker

	   <http://rt.cpan.org/NoAuth/Bugs.html?Dist=Archive-Any>

       o   Search CPAN

	   <http://search.cpan.org/dist/Archive-Any>

LICENSE

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

       See <http://www.perl.com/perl/misc/Artistic.html>

perl v5.10.0							    2008-06-25							 Archive::Any(3pm)
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