Rsync for back up, external HD Post: 302824629

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Operating Systems OS X (Apple) Rsync for back up, external HD Post 302824629 by drl on Friday 21st of June 2013 08:17:57 AM

06-21-2013

Registered User

Hi.

For backup of files, I use rsnapshot, possibly in your repositories, more information at rsnapshot . It uses rsync as part of a larger organization process. I have used it for more than a year, it allows recovery of individual files, and uses hard-links to create a very compact backup, yet still "addressable" by date-time of collection. You can set up cron jobs to do hourly, daily, weekly, monthly backups from the remote gathering computer. I backup at 4-hour intervals.

For a very quick backup of everything, I often used a tar.gz file -- it quickly restores my files to updated, and newly installed systems with no trouble (although you may not want every old file).

For cloning to create a bootable image, I suggest you look at Clonezilla - About -- it will use dd as a last resort, but will first check to see if it can copy by omitting unused sectors. (I use software RAID, which causes a dd copy.)

Always experiment before you commit important data.

Best wishes ... cheers, drl

drl

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LEARN ABOUT MINIX

backup

BACKUP(8)						      System Manager's Manual							 BACKUP(8)

NAME

       backup - backup files

SYNOPSIS

       backup [-djmnorstvz] dir1 dir2

OPTIONS

       -d     At top level, only directories are backed up

       -j     Do not copy junk:  *.Z, *.bak, a.out, core, etc

       -m     If device full, prompt for new diskette

       -n     Do not backup top-level directories

       -o     Do not copy *.o files

       -r     Restore files

       -s     Do not copy *.s files

       -t     Preserve creation times

       -v     Verbose; list files being backed up

       -z     Compress the files on the backup medium

EXAMPLES

       backup -mz . /f0    # Backup current directory compressed

       backup /bin /usr/bin
			   # Backup bin from RAM disk to hard disk

DESCRIPTION

       Backup (recursively) backs up the contents of a given directory and its subdirectories to another part of the file system.  It has two typ-
       ical uses.  First, some portion of the file system can be backed up onto 1 or more diskettes.  When  a  diskette  fills	up,  the  user	is
       prompted for a new one.	The backups are in the form of mountable file systems.	Second, a directory on RAM disk can be backed up onto hard
       disk.  If the target directory is empty, the entire source directory is copied there, optionally compressed to save space.  If  the  target
       directory  is  an  old  backup,	only  those  files  in	the target directory that are older than similar names in the source directory are
       replaced.  Backup uses times for this purpose, like make.  Calling Backup as Restore is equivalent to using the -r  option;  this  replaces
       newer files in the target directory with older files from the source directory, uncompressing them if necessary.  The target directory con-
       tents are thus returned to some previous state.

SEE ALSO

       tar(1).

																	 BACKUP(8)