To backup or not to backup. That is the question. Who likes to make backups? Anyone, Anyone? Hmm, I thought so... Versioned Backups I prefer to make backups with very simple tools, since when things go south, I don't want to have to install a complicated system just to get my data back. Most UNIX backup systems are based on rsync and by using a careful system of hard links (multiple new names for the same old file), differential backups can save you oodles of disk space in the long run, while making it very easy to step through an archive and retrieve specific versions of old files: https://www.nongnu.org/rdiff-backup/ http://www.mikerubel.org/computers/rsync_snapshots/ https://popey.com/blog/2020/12/straightforward-linux-backups-with-rsnapshot/ Three for the Price of One The original article by Mike Rubel describes how to keep three backups for the price of one, using a combination of hard links and rsync . That idea then spawned the rsnapshot (pull) and rdiff-
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