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README.md

1WHAT IS RSYNC?
2--------------
3
4Rsync is a fast and extraordinarily versatile file copying tool for
5both remote and local files.
6
7Rsync uses a delta-transfer algorithm which provides a very fast method
8for bringing remote files into sync.  It does this by sending just the
9differences in the files across the link, without requiring that both
10sets of files are present at one of the ends of the link beforehand.  At
11first glance this may seem impossible because the calculation of diffs
12between two files normally requires local access to both files.
13
14A technical report describing the rsync algorithm is included with this
15package.
16
17
18USAGE
19-----
20
21Basically you use rsync just like scp, but rsync has many additional
22options.  To get a complete list of supported options type:
23
24    rsync --help
25
26See the manpage for more detailed information.
27
28
29BUILDING AND INSTALLING
30-----------------------
31
32If you need to build rsync yourself, check out the [INSTALL][1] page for
33information on what libraries and packages you can use to get the maximum
34features in your build.
35
36[1]: https://github.com/WayneD/rsync/blob/master/INSTALL.md
37
38SETUP
39-----
40
41Rsync normally uses ssh or rsh for communication with remote systems.
42It does not need to be setuid and requires no special privileges for
43installation.  You must, however, have a working ssh or rsh system.
44Using ssh is recommended for its security features.
45
46Alternatively, rsync can run in `daemon' mode, listening on a socket.
47This is generally used for public file distribution, although
48authentication and access control are available.
49
50To install rsync, first run the "configure" script.  This will create a
51Makefile and config.h appropriate for your system.  Then type "make".
52
53Note that on some systems you will have to force configure not to use
54gcc because gcc may not support some features (such as 64 bit file
55offsets) that your system may support.  Set the environment variable CC
56to the name of your native compiler before running configure in this
57case.
58
59Once built put a copy of rsync in your search path on the local and
60remote systems (or use "make install").  That's it!
61
62
63RSYNC DAEMONS
64-------------
65
66Rsync can also talk to "rsync daemons" which can provide anonymous or
67authenticated rsync.  See the rsyncd.conf(5) man page for details on how
68to setup an rsync daemon.  See the rsync(1) man page for info on how to
69connect to an rsync daemon.
70
71
72WEB SITE
73--------
74
75For more information, visit the [main rsync web site][2].
76
77[2]: https://rsync.samba.org/
78
79You'll find a FAQ list, downloads, resources, HTML versions of the
80manpages, etc.
81
82
83MAILING LISTS
84-------------
85
86There is a mailing list for the discussion of rsync and its applications
87that is open to anyone to join.  New releases are announced on this
88list, and there is also an announcement-only mailing list for those that
89want official announcements.  See the [mailing-list page][3] for full
90details.
91
92[3]: https://rsync.samba.org/lists.html
93
94
95BUG REPORTS
96-----------
97
98The [bug-tracking web page][4] has full details on bug reporting.
99
100[4]: https://rsync.samba.org/bug-tracking.html
101
102That page contains links to the current bug list, and information on how to
103do a good job when reporting a bug.  You might also like to try searching
104the Internet for the error message you've received, or looking in the
105[mailing list archives][5].
106
107[5]: https://mail-archive.com/rsync@lists.samba.org/
108
109To send a bug report, follow the instructions on the bug-tracking
110page of the web site.
111
112Alternately, email your bug report to <rsync@lists.samba.org>.
113
114
115GIT REPOSITORY
116--------------
117
118If you want to get the very latest version of rsync direct from the
119source code repository, then you will need to use git.  The git repo
120is hosted [on GitHub][6] and [on Samba's site][7].
121
122[6]: https://github.com/WayneD/rsync
123[7]: https://git.samba.org/?p=rsync.git;a=summary
124
125See [the download page][8] for full details on all the ways to grab the
126source.
127
128[8]: https://rsync.samba.org/download.html
129
130
131COPYRIGHT
132---------
133
134Rsync was originally written by Andrew Tridgell and is currently
135maintained by Wayne Davison.  It has been improved by many developers
136from around the world.
137
138Rsync may be used, modified and redistributed only under the terms of
139the GNU General Public License, found in the file [COPYING][9] in this
140distribution, or at [the Free Software Foundation][10].
141
142[9]: https://github.com/WayneD/rsync/blob/master/COPYING
143[10]: https://www.fsf.org/licenses/gpl.html
144