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Full Discussion: Disk Usage - Space Used
Top Forums Shell Programming and Scripting Disk Usage - Space Used Post 302340043 by Festus Hagen on Sunday 2nd of August 2009 04:53:39 AM
Old 08-02-2009
Hi all,

A little more on this issue that is baffling.

The following code produces two different results depending on if it's run from the command line or from a cron job...

From a cron job it is exactly twice the block count.

Any ideas??

Command line:
Code:
sh SpaceUsed.sh

Cron job:
Code:
30	4	*	*	*	root	sh /location/SpaceUsed.sh

Example output:
Code:
From Command line
 Space used: 912924
From crontab
 Space used: 1825848

The Code
Code:
#!/bin/sh

#set -x

TARGET="/path"
LOGNAME="test.log"

SpaceUsed()
{
  # for demo simplicity
  du -s "${1}" | cut -f1
#  echo $(($(du -s "${1}" | cut -f1) * 1024)) | sed -e :x -e 's/\([0-9][0-9]*\)\([0-9][0-9][0-9]\)/\1,\2/' -e 'tx'
}

echo " Space used: $(SpaceUsed ${TARGET})" >> ${TARGET}/${LOGNAME}
exit 0

Thanks all!

-Enjoy
fh : )_~
Last edited by Festus Hagen; 08-02-2009 at 05:28 PM.. Reason: Clarity
 

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LEARN ABOUT DEBIAN

svn-fast-backup

svn-fast-backup(1)					      General Commands Manual						svn-fast-backup(1)

NAME

       svn-fast-backup - very fast backup for Subversion fsfs repositories.

SYNOPSIS

       svn-fast-backup [-q] [-k{N|all}] [-f] [-t] [-s] repos_path backup_dir

DESCRIPTION

       svn-fast-backup uses rsync snapshots for very fast backup of a Subversion fsfs repository at repos_path to backup_dir/repos-rev, the latest
       revision number in the repository.  Multiple fsfs backups share data via hardlinks, so old backups are almost free, since a newer  revision
       of a repository is almost a complete superset of an older revision.

       This  is  good for replacing incremental log-dump+restore-style backups because it is just as space-conserving and even faster; there is no
       inter-backup state (old backups are essentially caches); each backup directory is self-contained.  It has the same  command-line  interface
       as svn-hot-backup(1) (if you use --force), but only works for fsfs repositories.

       svn-fast-backup keeps 64 backups by default and deletes backups older than these; this can be adjusted with the -k option.

OPTIONS

       -h, --help
	      Shows some brief help text.

       -q, --quiet
	      Quieter-than-usual operation.

       -k, --keep=N
	      Keep a specified number of backups; the default is to keep 64.

       -k, --keep=all
	      Do not delete any old backups at all.

       -f, --force
	      Make a new backup even if one with the current revision exists.

       -t, --trace
	      Show actions.

       -s, --simulate
	      Don't perform actions.

AUTHOR

       Voluntary contributions made by many individuals.  Copyright (C) 2006 CollabNet.

								    2006-11-09							svn-fast-backup(1)
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