a fast, versatile, remote (and local) file-copying tool
This option increases the amount of information you are given during the transfer. By default,
rsync works silently. A single -v will give you information about what files are being transferred
and a brief summary at the end. Two -v options will give you information on what files are being
skipped and slightly more information at the end. More than two -v options should only be used if
you are debugging rsync.
Note that the names of the transferred files that are output are done using a default --out-format
of "%n%L", which tells you just the name of the file and, if the item is a link, where it points.
At the single -v level of verbosity, this does not mention when a file gets its attributes
changed. If you ask for an itemized list of changed attributes (either --itemize-changes or
adding "%i" to the --out-format setting), the output (on the client) increases to mention all
items that are changed in any way. See the --out-format option for more details.
This is equivalent to -rlptgoD. It is a quick way of saying you want recursion and want to
preserve almost everything (with -H being a notable omission). The only exception to the above
equivalence is when --files-from is specified, in which case -r is not implied.
Note that -a does not preserve hardlinks, because finding multiply-linked files is expensive. You
must separately specify -H.
Output numbers in a more human-readable format. This makes big numbers output using larger units,
with a K, M, or G suffix. If this option was specified once, these units are K (1000), M
(1000*1000), and G (1000*1000*1000); if the option is repeated, the units are powers of 1024
instead of 1000.
This tells rsync to delete extraneous files from the receiving side (ones that aren’t on the
sending side), but only for the directories that are being synchronized. You must have asked
rsync to send the whole directory (e.g. "dir" or "dir/") without using a wildcard for the
directory’s contents (e.g. "dir/*") since the wildcard is expanded by the shell and rsync thus
gets a request to transfer individual files, not the files’ parent directory. Files that are
excluded from the transfer are also excluded from being deleted unless you use the
--delete-excluded option or mark the rules as only matching on the sending side (see the
include/exclude modifiers in the FILTER RULES section).
Prior to rsync 2.6.7, this option would have no effect unless --recursive was enabled. Beginning
with 2.6.7, deletions will also occur when --dirs (-d) is enabled, but only for directories whose
contents are being copied.
This option can be dangerous if used incorrectly! It is a very good idea to first try a run using
the --dry-run option (-n) to see what files are going to be deleted.
If the sending side detects any I/O errors, then the deletion of any files at the destination will
be automatically disabled. This is to prevent temporary filesystem failures (such as NFS errors)
on the sending side from causing a massive deletion of files on the destination. You can override
this with the --ignore-errors option.
The --delete option may be combined with one of the --delete-WHEN options without conflict, as
well as --delete-excluded. However, if none of the --delete-WHEN options are specified, rsync
will choose the --delete-during algorithm when talking to rsync 3.0.0 or newer, and the
--delete-before algorithm when talking to an older rsync. See also --delete-delay and
This option is a simplified form of the --filter option that defaults to an exclude rule and does
not allow the full rule-parsing syntax of normal filter rules.
See the FILTER RULES section for detailed information on this option.