this post was submitted on 07 Dec 2023
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Linux
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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Just use
rsync -va
(possibly with --chown if you want user/group to be different at the destination and with --delete if you want removed files to be deleted) to continue the copy operation, it automatically takes care of figuring out which files still need to be copied and which are already there.NO STOP!
The default quick check algorithm of rsync is not safe for this. It only checks filesize and modification time to determine if files are equal. After a b0rked copy, these are not to be trusted.
You should add the
-c
flag so that files are properly checksummed, unfortunately if you have slow storage on either end, this often negates the speed advantage of rsync.For example, consider this example:
Contrary to what you might expect, the rsync command copies nothing and the output at the end will show:
If you change the rsync command in the example above to
rsync -c -avh source/ destination/
, it will work as expected.My memory of the cp command is that attributes such as file times were transferred at the last step. I think this would make rsync safe in most situations where a system crash wasn't involved.
True if the initial state is unknown but if you do your initial copy and all the later syncs with rsync it is not really necessary since rsync puts the partial files in a temporary location (there are same parameters to control the details of that too).
rsync -avP
rsync even supports Alien vs Predator? What doesn't rsync do???
Bring my dad back
All hail the rsync!
We thank the rsync for it's unwavering reliability.
Amen.
Thank you!