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Full Discussion: Showing off my rsync-to-USB script
Top Forums Shell Programming and Scripting Showing off my rsync-to-USB script Post 302363012 by ripat on Monday 19th of October 2009 07:23:26 AM
Old 10-19-2009
If you want to do rotating (incremental) backups, rsync can create hard links on the destination server. Hard links will conserve disk space on your USB key while doing rotating backups.

Check option --link-dest in the rsync manual.

I personally prefer the good old cp -l method to create hardlinks. May be I should try again to use rsync to manage the hardlinks but it's so easy with cp.

With that hard link trick I do rotating snapshots every day (31 days max) and one snapshot every month (max 12 month). Depending on how often your files change, you can save *a lot* of space on your destination.

Google "hardlink rsync" and you will find interesting scripts.
 

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LEARN ABOUT SUSE

usb-devices

usb-devices(8)							Linux USB Utilities						    usb-devices(8)

NAME

       usb-devices - print USB device details

SYNOPSIS

       usb-devices

DESCRIPTION

       usb-devices is a (bash) shell script that can be used to display details of USB buses in the system and the devices connected to them.

       The  output  of	the  script  is similar to the usb/devices file available either under /proc/bus (if usbfs is mounted), or under /sys/ker-
       nel/debug (if debugfs is mounted there). The script is primairily intended to be used if the file is not available.

       In contrast to the usb/devices file, this script only lists active interfaces (those marked with a "*" in the usb/devices file)	and  their
       endpoints.

       Be advised that there can be differences in the way information is sorted, as well as in the format of the output.

RETURN VALUE

       If sysfs is not mounted, a non-zero exit code is returned.

FILES

       /sys/bus/usb/devices/usb*
	      The part of the sysfs tree the script walks through to assemble the printed information.

       /proc/bus/usb/devices
	      Location where the usb/devices file can normally be found for Linux kernels before 2.6.31, if usbfs is mounted.

       /sys/kernel/debug/usb/devices
	      Location where the usb/devices file can normally be found for Linux kernel 2.6.31 and later, if debugfs is mounted.

SEE ALSO

       lsusb(8), usbview(8).

AUTHORS

       Greg Kroah-Hartman <greg@kroah.com>

       Randy Dunlap <rdunlap@xenotime.net>

       Frans Pop <elendil@planet.nl>

usbutils-0.84							   23 June 2009 						    usb-devices(8)
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