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NAS System
User Manual 159
Here is a short summary of the available options. Please refer to the detailed description
below for a complete description. Some options only have a long variant.
-r, --recursive
recurse into directories
-v, --verbose increase verbosity. This option increases the amount of information
your are given during the transfer
-l, --links copy symlinks as symlinks
-p, --perms preserve permissions. This option causes the receiving Rsync to set
the destination permissions to be the same as the source permissions.
-o, --owner preserve owner (super-user only). This option causes Rsync to set the
owner of the destination file to be the same as the source file
-g, --group preserve group. This option causes Rsync to set the group of the
destination file to be the same as the source file.
--ignore-existing Ignore files that already exist on the receiver. This tells Rsync to skip
updating files that already exist on the destination.
-b, --backup With this option, preexisting destination files are renamed as each file
is transferred or deleted. You can control where the backup file goes
and what (if any) suffix gets appended using the --backup-dir and --
suffix options
--backup-dir=dir In combination with the --backup option, this tells Rsync to store all
backups in the specified directory. This is very useful for incremental
backups. You can additionally specify a backup suffix using the --
suffix option (otherwise the files backed up in the specified directory
will keep their original filenames).
--suffix=SUFFIX This option allows you to override the default backup suffix used with
the --backup (-b) option. The default suffix is a ~ if no --backup-dir is
specified, otherwise it is an empty string.
-D, --devices preserve device files
--specials preserve special files
-t, --times preserve times
-S, --sparse handle sparse files efficiently
-z, --compress Compresses file data during the transfer. This option is useful in slow
links.
-a, --archive 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).
-E, --executability This option causes Rsync to preserve the executability (or non-
executability) of regular files when --perms is not enabled.
-h, --human-
readable Output numbers in a human-readable format.
--stats Give some file-transfer stats.
--delete Delete files that don't exist on the sender.
--log-file-
format=FORMAT Output filenames using the specified format.
--log-file=FILE Output filenames using the specified file.