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Operating Systems OS X (Apple) Rsync for back up, external HD Post 302825071 by marek on Sunday 23rd of June 2013 09:52:35 AM
Old 06-23-2013
Thank you vbe and del for your hints!


Sorry for answering so late. I have had to read tons of manual pages of rsync, cp, dd, cpio, tar, rsnapshot.

My question was concerning an exact backup of my HD on a USB-HD and how to do it incrementally.

@drl

Off course rsync is also a tool for external HDs not only over network.

If I am right the command I will use in future is the following to make a incremental backup - you may still prevent a catastrophe with some helpful hints:

Code:
sudo rsync -tavu --delete / /Volumes/backup_2013/

The option -t preserves modification times. -a archive mode. -v verbose. -u update (only newer files are transferred - this switch I was looking for). --delete means all files which are deleted on the source HD are deleted on the destination too. Because I asked for an exact copy of my actual HD, this is the option I was looking for.

To make the external HD bootable (MacOS Lion) I have to make some researches again ... It is for a later post. (I am not sure, whether it will possible with an encrypted HD).


marek

---------- Post updated at 03:52 PM ---------- Previous update was at 02:23 PM ----------

To make the external HD bootable (only to make this thread complete for some MacOS X users):

First try: I opened the HD Utility in the Utilities folder. I was hoping to find something like "Make Disk Bootable", but no help. I will not claim, that there is no such "button". I simply did not find it.

I have no Install MacOS X Disk Image in my Applications Folder. My idea was, to run the installer over the external HD to make it bootable. But to download this large installer file over the App Store, just to make an external HD bootable, I thought that this is overkill. So I decided to try the following and it worked:

The old version of CCC (Carbon Copy Cloner), which is now payable, is working! I just have had to run a copy of the HD over the external HD ...

I expected from this forum, to help me to find the right switches for rsync, and perhaps tell me, how to make an external HD bootable over the Shell. Disappointed!


Hope this helps somebody out there


marek
 

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slack.conf(5)							File Formats Manual						     slack.conf(5)

NAME
slack.conf - configuration file for slack DESCRIPTION
The file /etc/slack.conf contains configuration information for slack(8) and its backends. It should contain one keyword-value pair per line, separated by an '=' sign. Keywords must consist solely of capital letters and underscores. Values may take any appropriate format, but must not begin with a space. Comments start with '#', and all text from the '#' to the end of a line is ignored. Trailing whitespace on lines is ignored. Empty lines or lines consisting of only whitespace and comments are ignored. Valid keywords are: SOURCE The master source for slack roles. It can be in one of four forms: o /path/to/dir Use a local directory. o somehost:/path/to/dir Use given directory on a remote host via rsync over SSH. o rsync://somehost/module Use module on a remote rsyncd server (directly over the network). o somehost::module Use the rsync daemon protocol over SSH to the given host. See "USING RSYNC-DAEMON FEATURES VIA A REMOTE-SHELL CONNECTION" in rsync(1) All forms of SOURCE are passed directly to rsync, so you can do things like add "user@" before the host on any remote forms. For more about what rsync can do, see its manual page, of course. For the last form, however, we do a little magic. rsync treats the last two forms equivalently, so we overload the last form by automatically passing "-e ssh" to rsync when we see it. This hack lets us tell slack to use this nice feature of rsync just using the SOURCE config option. ROOT The root filesystem into which to install slack roles. Usually '/'. ROLE_LIST The location of the role list, which lists the roles to be installed by default on each host. This can be a path relative to the source, or can be an entirely separate location if it starts with a slash or a hostname (option- ally preceeded by user@). CACHE A local cache directory, used as a local mirror of the SOURCE. STAGE A local staging directory, used as an intermediate stage when installing files. BACKUP_DIR A directory in which to keep dated backups for rollbacks. EXAMPLE
A typical file might look like this: # slack.conf configuration file SOURCE=slack-master:/slack # source is on a remote # host named "slack-master" ROLE_LIST=slack-master:/roles.conf ROOT=/ CACHE=/var/cache/slack STAGE=/var/lib/slack/stage BACKUP_DIR=/var/lib/slack/backups FILES
/etc/slack.conf SEE ALSO
slack(8), rsync(1) File formats 2005-05-23 slack.conf(5)
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