FSArchiver is a system tool that allows you to save the contents of
a filesystem to a compressed archive file. The filesystem can be
restored on a partition which has a different size and it can be
restored on a different filesystem. Unlike tar/dar, FSArchiver
also creates the filesystem when it extracts the data to partitions.
Everything is checksummed in the archive in order to protect the data.
If the archive is corrupt, you just loose the current file, not the
whole archive.
There's a manpage now so you can get on usage by doing
"fsarchiver -h" (for short help) or "man 8 fsarchiver"
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