I've been using an external harddrive to store backups of my laptop for a while now. At first I manually created a set of compressed tar archives about once a month. That was a bad system though because it used a lot of space and was a mission to retrieve files from backups. I then started using pdumpfs, which can do incremental backups by hard linking files which haven't changed. The problem I found with it however was that if a file's ownership or timestamps changed it wouldn't be hard linked even if the content hadn't changed.
I therefore set out to find a better backup solution. My requirements were as follows.
I finally settled on storeBackup which supports everything except number 5.
It works similarly to
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