rsync: Wrapper around rsync
In mrc-ide/syncr: Synchronise Directories

Wrapper around all of rsync's options. I'm not sure how useful this will be (because you'll really need to read rsync's extensive manual to use this, but perhaps it will be useful.

rsync(src, dest, verbose = FALSE, quiet = FALSE, no_motd = FALSE,
  checksum = FALSE, archive = FALSE, recursive = FALSE,
  relative = FALSE, no_implied_dirs = FALSE, backup = FALSE,
  backup_dir = NULL, suffix = NULL, update = FALSE, inplace = FALSE,
  append = FALSE, dirs = FALSE, links = FALSE, copy_links = FALSE,
  copy_unsafe_links = FALSE, safe_links = FALSE, copy_dirlinks = FALSE,
  keep_dirlinks = FALSE, hard_links = FALSE, perms = FALSE,
  executability = FALSE, chmod = NULL, owner = FALSE, group = FALSE,
  devices = FALSE, specials = FALSE, times = FALSE,
  omit_dir_times = FALSE, super = FALSE, sparse = FALSE,
  dry_run = FALSE, whole_file = FALSE, one_file_system = FALSE,
  block_size = NULL, rsh = NULL, rsync_path = NULL, existing = FALSE,
  ignore_existing = FALSE, remove_source_files = FALSE, delete = FALSE,
  delete_before = FALSE, delete_during = FALSE, delete_after = FALSE,
  delete_excluded = FALSE, ignore_errors = FALSE, force = FALSE,
  max_delete = NULL, max_size = NULL, min_size = NULL, partial = FALSE,
  partial_dir = NULL, delay_updates = FALSE, prune_empty_dirs = FALSE,
  numeric_ids = FALSE, timeout = NULL, ignore_times = FALSE,
  size_only = FALSE, modify_window = NULL, temp_dir = NULL,
  fuzzy = FALSE, compare_dest = NULL, copy_dest = NULL,
  link_dest = NULL, compress = FALSE, compress_level = NULL,
  cvs_exclude = FALSE, filter = NULL, exclude = NULL,
  exclude_from = NULL, include = NULL, include_from = NULL,
  files_from = NULL, from0 = FALSE, address = NULL, port = NULL,
  sockopts = NULL, blocking_io = FALSE, stats = FALSE,
  eight_bit_output = FALSE, human_readable = FALSE, progress = FALSE,
  itemize_changes = FALSE, out_format = NULL, log_file = NULL,
  log_file_format = NULL, password_file = NULL, list_only = FALSE,
  bwlimit = NULL, write_batch = NULL, only_write_batch = NULL,
  read_batch = NULL, protocol = NULL, checksum_seed = NULL,
  ipv4 = FALSE, ipv6 = FALSE, extended_attributes = FALSE,
  cache = FALSE, drop_src_directory = FALSE, args_only = FALSE)

`src`	Source files to copy. See details
`dest`	A single destination path, possibly remote.
`verbose`	increase verbosity
`quiet`	suppress non-error messages
`no_motd`	suppress daemon-mode MOTD (see caveat)
`checksum`	skip based on checksum, not mod-time & size
`archive`	archive mode; same as recursive, links, perms, times, group, owner, devices specials but no hard_links
`recursive`	recurse into directories
`relative`	use relative path names
`no_implied_dirs`	don't send implied dirs with relative
`backup`	make backups (see suffix & backup_dir)
`backup_dir`	make backups into hierarchy based in DIR
`suffix`	backup suffix (default ~ w/o backup_dir)
`update`	skip files that are newer on the receiver
`inplace`	update destination files in-place
`append`	append data onto shorter files
`dirs`	transfer directories without recursing
`links`	copy symlinks as symlinks
`copy_links`	transform symlink into referent file/dir
`copy_unsafe_links`	only "unsafe" symlinks are transformed
`safe_links`	ignore symlinks that point outside the tree
`copy_dirlinks`	transform symlink to dir into referent dir
`keep_dirlinks`	treat symlinked dir on receiver as dir
`hard_links`	preserve hard links
`perms`	preserve permissions
`executability`	preserve executability
`chmod`	affect file and/or directory permissions
`owner`	preserve owner (super-user only)
`group`	preserve group
`devices`	preserve device files (super-user only)
`specials`	preserve special files
`times`	preserve times
`omit_dir_times`	omit directories when preserving times
`super`	receiver attempts super-user activities
`sparse`	handle sparse files efficiently
`dry_run`	show what would have been transferred
`whole_file`	copy files whole (without rsync algorithm)
`one_file_system`	don't cross filesystem boundaries
`block_size`	force a fixed checksum block-size
`rsh`	specify the remote shell to use
`rsync_path`	specify the rsync to run on remote machine
`existing`	skip creating new files on receiver
`ignore_existing`	skip updating files that exist on receiver
`remove_source_files`	sender removes synchronized files (non-dir)
`delete`	delete extraneous files from dest dirs
`delete_before`	receiver deletes before transfer (default)
`delete_during`	receiver deletes during xfer, not before
`delete_after`	receiver deletes after transfer, not before
`delete_excluded`	also delete excluded files from dest dirs
`ignore_errors`	delete even if there are I/O errors
`force`	force deletion of dirs even if not empty
`max_delete`	don't delete more than NUM files
`max_size`	don't transfer any file larger than SIZE
`min_size`	don't transfer any file smaller than SIZE
`partial`	keep partially transferred files
`partial_dir`	put a partially transferred file into DIR
`delay_updates`	put all updated files into place at end
`prune_empty_dirs`	prune empty directory chains from file_list
`numeric_ids`	don't map uid/gid values by user/group name
`timeout`	set I/O timeout in seconds
`ignore_times`	don't skip files that match size and time
`size_only`	skip files that match in size
`modify_window`	compare mod_times with reduced accuracy
`temp_dir`	create temporary files in directory DIR
`fuzzy`	find similar file for basis if no dest file
`compare_dest`	also compare received files relative to DIR
`copy_dest`	... and include copies of unchanged files
`link_dest`	hardlink to files in DIR when unchanged
`compress`	compress file data during the transfer
`compress_level`	explicitly set compression level
`cvs_exclude`	auto_ignore files in the same way CVS does
`filter`	add a file_filtering RULE
`exclude`	exclude files matching PATTERN
`exclude_from`	read exclude patterns from FILE
`include`	don't exclude files matching PATTERN
`include_from`	read include patterns from FILE
`files_from`	read list of source-file names from FILE
`from0`	all *from/filter files are delimited by 0s
`address`	bind address for outgoing socket to daemon
`port`	specify double_colon alternate port number
`sockopts`	specify custom TCP options
`blocking_io`	use blocking I/O for the remote shell
`stats`	give some file-transfer stats
`eight_bit_output`	leave high-bit chars unescaped in output
`human_readable`	output numbers in a human-readable format
`progress`	show progress during transfer
`itemize_changes`	output a change-summary for all updates
`out_format`	output updates using the specified FORMAT
`log_file`	log what we're doing to the specified FILE
`log_file_format`	log updates using the specified FMT
`password_file`	read password from FILE
`list_only`	list the files instead of copying them
`bwlimit`	limit I/O bandwidth; KBytes per second
`write_batch`	write a batched update to FILE
`only_write_batch`	like write_batch but w/o updating dest
`read_batch`	read a batched update from FILE
`protocol`	force an older protocol version to be used
`checksum_seed`	set block/file checksum seed (advanced)
`ipv4`	prefer IPv4
`ipv6`	prefer IPv6
`extended_attributes`	copy extended attributes, resource forks
`cache`	disable fcntl(F_NOCACHE)
`drop_src_directory`	In the case where `src` is a single directory, don't copy the directory, but copy the contents.
`args_only`	Don't run anything and instead return the arguments that would have been passed to rsync.