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OpenBSD General Other questions regarding OpenBSD which do not fit in any of the categories below. |
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$ cd $ cd .. $ doas tar -cz -f ip6ix-`date +%Y%m%d` ip6ix/ |
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Should you want to manage multi-disc volumes, you may find sysutils/shunt helpful. From the package description:
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I also use the tar command but add the compression flag for gzip. Given that your /home directory is about 5GB, compression might be enough to get it all on one DVD.
My data fell in to two categories, ripped mp3's and other. My "other" data is frequently updated and includes emails You can feed the tar command a list of files/folders and be selective about what you back up. I have not ripped mp3 in several years. As far as the durability of DVD disks, I read somewhere, that standard disks could be relied on for about 10 years. I believe that there are some newer DVD touting more durable data storage but not sure sure that the improved durability is anything more than hype. Last edited by shep; 2nd February 2018 at 03:53 PM. |
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You can counter that using tools like "par2cmdline", but they add redundancy making files larger. Some file formats are compressable to pretty good degree for example text files. For text files compression and later adding redundancy can make resulting archive smaller overall. Quote:
If you have DVD recorder in your non-budget desktop's system unit from 2008 I would prefer that recorder than today recorders. Record DVD at medium speed for improved durability. There were tests that showed low speed and maximum speed recording are making more writing errors than medium speed recording.
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Signature: Furthermore, I consider that systemd must be destroyed. Based on Latin oratorical phrase Last edited by e1-531g; 3rd February 2018 at 09:30 AM. |
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Many thanks to everyone who responded.
Shunt looks quite interesting, I'll take a look at that more closely later, thanks jggimi. Since the size of the backup is relatively small (and consists mainly of text), the compression ratio is good. With compression this will easily fit on one disk. I might add par2 verification using par2cmdline also, this seems like a good idea for important data (though I tend to make more than one backup at a time, so may be overkill). I wanted to create a UDF filesystem on the dvd-ram disk, as this would be a very convenient way of accessing the dvd for backup purposes, but it seems this is not (yet?) available in OpenBSD. I can mount an already formatted udf volume using mount_udf(8), but it's read-only.
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dc -e '[q]sa[ln0=aln256%Pln256/snlbx]sb12247225403800449909543746snlbxq' |
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