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15 lines
881 B
Text
15 lines
881 B
Text
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zsync is a file transfer program. It allows you to download a file from
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a remote web server, where you have a copy of an older version of the
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file on your computer already. zsync downloads only the new parts of
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the file. It uses the same algorithm as rsync.
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zsync does not require any special server software or a shell account
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on the remote system (rsync, in comparison, requires that you have an
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rsh or ssh account, or that the remote system runs rsyncd). Instead, it
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uses a control file - a .zsync file - that describes the file to be
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downloaded and enables zsync to work out which blocks it needs. This
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file can be created by the admin of the web server hosting the
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download, and placed alongside the file to download - it is generated
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once, then any downloaders with zsync can use it. Alternatively, anyone
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can download the file, make a .zsync and provide it to other users.
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