X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/0dfffb88e142e043f6347407dbde591fd1c1c5e6..06b96ffa861132da3545c7c7cf3a0fa150b70c9e:/rsync.yo

diff --git a/rsync.yo b/rsync.yo
index 0770d2f2..5fd68f52 100644
--- a/rsync.yo
+++ b/rsync.yo
@@ -350,21 +350,22 @@ to the detailed description below for a complete description.  verb(
  -I, --ignore-times          don't skip files that match size and time
      --size-only             skip files that match in size
      --modify-window=NUM     compare mod-times with reduced accuracy
- -T  --temp-dir=DIR          create temporary files in directory DIR
+ -T, --temp-dir=DIR          create temporary files in directory DIR
+ -y, --fuzzy                 find similar file for basis if no dest file
      --compare-dest=DIR      also compare received files relative to DIR
      --copy-dest=DIR         ... and include copies of unchanged files
      --link-dest=DIR         hardlink to files in DIR when unchanged
- -z, --compress              compress file data
+ -z, --compress              compress file data during the transfer
  -C, --cvs-exclude           auto-ignore files in the same way CVS does
  -f, --filter=RULE           add a file-filtering RULE
- -F                          same as --filter=': /.rsync-filter'
+ -F                          same as --filter='dir-merge /.rsync-filter'
                              repeated: --filter='- .rsync-filter'
      --exclude=PATTERN       exclude files matching PATTERN
      --exclude-from=FILE     read exclude patterns from FILE
      --include=PATTERN       don't exclude files matching PATTERN
      --include-from=FILE     read include patterns from FILE
      --files-from=FILE       read list of source-file names from FILE
- -0  --from0                 all *from file lists are delimited by nulls
+ -0, --from0                 all *from file lists are delimited by nulls
      --version               print version number
      --port=PORT             specify double-colon alternate port number
      --blocking-io           use blocking I/O for the remote shell
@@ -379,8 +380,8 @@ to the detailed description below for a complete description.  verb(
      --write-batch=FILE      write a batched update to FILE
      --read-batch=FILE       read a batched update from FILE
      --checksum-seed=NUM     set block/file checksum seed (advanced)
- -4  --ipv4                  prefer IPv4
- -6  --ipv6                  prefer IPv6
+ -4, --ipv4                  prefer IPv4
+ -6, --ipv6                  prefer IPv6
  -h, --help                  show this help screen)
 
 Rsync can also be run as a daemon, in which case the following options are
@@ -392,8 +393,8 @@ accepted: verb(
      --no-detach             do not detach from the parent
      --port=PORT             listen on alternate port number
  -v, --verbose               increase verbosity
- -4  --ipv4                  prefer IPv4
- -6  --ipv6                  prefer IPv6
+ -4, --ipv4                  prefer IPv4
+ -6, --ipv6                  prefer IPv6
  -h, --help                  show this help screen)
 
 manpageoptions()
@@ -909,6 +910,16 @@ scratch directory when creating temporary copies of the files
 transferred on the receiving side.  The default behavior is to create
 the temporary files in the receiving directory.
 
+dit(bf(-y, --fuzzy)) This option tells rsync that it should look for a
+basis file for any destination file that is missing.  The current algorithm
+looks in the same directory as the destination file for either a file that
+has an identical size and modified-time, or a similarly-named file.  If
+found, rsync uses the fuzzy basis file to try to speed up the transfer.
+
+Note that the use of the bf(--delete) option might get rid of any potential
+fuzzy-match files, so either use bf(--delete-after) or specify some
+filename exclusions if you need to prevent this.
+
 dit(bf(--compare-dest=DIR)) This option instructs rsync to use em(DIR) on
 the destination machine as an additional hierarchy to compare destination
 files against doing transfers (if the files are missing in the destination
@@ -956,15 +967,14 @@ bf(--link-dest) from working properly for a non-root user when bf(-o) was specif
 (or implied by bf(-a)).  You can work-around this bug by avoiding the bf(-o) option
 when sending to an old rsync.
 
-dit(bf(-z, --compress)) With this option, rsync compresses any data from
-the files that it sends to the destination machine.  This
-option is useful on slow connections.  The compression method used is the
-same method that gzip uses.
+dit(bf(-z, --compress)) With this option, rsync compresses the file data
+as it is sent to the destination machine, which reduces the amount of data
+being transmitted -- something that is useful over a slow connection.
 
-Note this this option typically achieves better compression ratios
-that can be achieved by using a compressing remote shell, or a
-compressing transport, as it takes advantage of the implicit
-information sent for matching data blocks.
+Note this this option typically achieves better compression ratios that can
+be achieved by using a compressing remote shell or a compressing transport
+because it takes advantage of the implicit information in the matching data
+blocks that are not explicitly sent over the connection.
 
 dit(bf(--numeric-ids)) With this option rsync will transfer numeric group
 and user IDs rather than using user and group names and mapping them