mv duplicating directories Post: 302535908

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Top Forums Shell Programming and Scripting mv duplicating directories Post 302535908 by beddo on Saturday 2nd of July 2011 05:21:43 PM

07-02-2011

Registered User

mv duplicating directories

Hi Folks,
I've put together a script for sorting my backup files into sub folders to be run from a cron job. Each file is named username.tar.gz and the file /etc/trueuserowners contains all users and their owner in the format "user: owner".
The script works fine identifying users and their owners and is as follows:

Code:

#!/bin/bash
_w="/path/to/backups"
_wb="$_w/*.tar.gz"

if [ -d "$_w" ]; then
        for f in $_wb
        do
                _f=$(basename $f)
                _user=${_f%%.*}
                _o=`grep "^$_user:" /etc/trueuserowners`
                _owner=${_o#* }
                if [ ! -d "$_w/$_owner" ]; then
                        `mkdir $_w/$_owner/`
                fi
                `mv $f $_w/$_owner/`
        done
fi

Say I have the following:

/path/to/backups/userabackup.tar.gz
usera is owned by resellera.

The first time the script runs, the script will create the following directory and move userabackup.tar.gz into it:

/path/to/backups/resellera

The script has an if in it to ensure that /path/to.backups/resellera is only created if it does not already exist as you can see. My problem is that the mv command appears to be backing up the directory and creating a new one instead of moving the file into the existing directory and replacing the file if it is already there.

For example:

The second time the script runs, /path/to/backups/resellera will be renamed to /path/to/backups/resellera.1 and a new /path/to/backups/resellera is created.
The third time, /path/to.backups/resellera.1 is renamed /path/to.backups/resellera.2, /path/to.backups/resellera to /path/to.backups/resellera.1 and a new directory created.

I shouldn't need to have the script remove the directory first and the mv command does not create backup directories like this when run from the console. The VERSION_CONTROL environment is not set.
Is there something specific that makes mv act like this when run from a cron job? Do I have to tell it to over-write instead of create these backups?

beddo

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storebackupsearch

STOREBACKUPSEARCH(1)					User Contributed Perl Documentation				      STOREBACKUPSEARCH(1)

NAME

       storeBackupSearch.pl - locates different versions of a file saved with storeBackup.pl.

SYNOPSIS

	       storeBackupSearch.pl -g configFile

	       storeBackupSearch.pl -b backupDirDir [-f configFile]
		     [-s rule]	[--absPath] [-w file] [--parJobs number]
		     [-d level] [--once] [--print] [backupRoot . . .]

DESCRIPTION

       You need some basic understanding of linux and perl to use it.

OPTIONS

       --generate, -g
		   generate a config file

       --print
		   print configuration read from configuration file and stop

       --configFile, -f
		   configuration file (instead of or
		   additionally to parameters)

       --backupDir backupDirDir, -b backupDirDir
				   top level directory of all backups

       --searchRule, -s
				   rule for searching
				   see README: 'including / excluding files and directories'

       --absPath, -a
		   write result with absolute path names

       --writeToFile, -w
		   write search result also to file

       --parJobs, -p
		   number of parallel jobs, default = chosen automatically

       --debug, -d
		   debug level, possible values are 0, 1, 2, default = 0

       --once, -o
		   show every file found only once (depending on md5 sum)

       backupRoot
		   Root directories of backups where to search relative
		   to backupDir. If no directories are specified, all
		   backups below backupDir are chosen.

COPYRIGHT

       Copyright (c) 2008-2009 by Heinz-Josef Claes (see README).  Published under the GNU General Public License v3 or any later version

perl v5.14.2							    2012-06-16						      STOREBACKUPSEARCH(1)