rsync(1) --progress -v -au username@host:"'/path'" /mnt/
a fast, versatile, remote (and local) file-copying tool
       This  option  tells  rsync to print information showing the progress of the transfer. This gives a
       bored user something to watch.  Implies --verbose if it wasn’t already specified.

              While rsync is transferring a regular file, it updates a progress line that looks like this:

                    782448  63%  110.64kB/s    0:00:04

              In this example, the receiver has reconstructed 782448 bytes or 63% of the sender’s file, which is
              being  reconstructed  at  a rate of 110.64 kilobytes per second, and the transfer will finish in 4
              seconds if the current rate is maintained until the end.

              These statistics can be misleading if rsync’s delta-transfer algorithm is in use.  For example, if
              the  sender’s  file consists of the basis file followed by additional data, the reported rate will
              probably drop dramatically when the receiver gets to the  literal  data,  and  the  transfer  will
              probably  take  much  longer to finish than the receiver estimated as it was finishing the matched
              part of the file.

              When the file transfer finishes, rsync replaces the progress line with a summary line  that  looks
              like this:

                   1238099 100%  146.38kB/s    0:00:08  (xfer#5, to-check=169/396)

              In  this  example,  the file was 1238099 bytes long in total, the average rate of transfer for the
              whole file was 146.38 kilobytes per second over the 8 seconds that it took to complete, it was the
              5th  transfer of a regular file during the current rsync session, and there are 169 more files for
              the receiver to check (to see if they are up-to-date or not) remaining out of the 396 total  files
              in the file-list.
-v, --verbose
       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.
-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).  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.
-u, --update
       This forces rsync to skip any files which exist on the destination and have a modified  time  that
       is  newer than the source file.  (If an existing destination file has a modification time equal to
       the source file’s, it will be updated if the sizes are different.)

       Note that this does not affect the copying of symlinks or other special files.  Also, a difference
       of  file format between the sender and receiver is always considered to be important enough for an
       update, no matter what date is on the objects.  In other words, if  the  source  has  a  directory
       where the destination has a file, the transfer would occur regardless of the timestamps.

       This  option  is a transfer rule, not an exclude, so it doesn’t affect the data that goes into the
       file-lists, and thus it doesn’t affect deletions.  It just limits  the  files  that  the  receiver
       requests to be transferred.
Local:  rsync [OPTION...] SRC... [DEST]

Access via remote shell:
  Pull: rsync [OPTION...] [USER@]HOST:SRC... [DEST]
  Push: rsync [OPTION...] SRC... [USER@]HOST:DEST

Access via rsync daemon:
  Pull: rsync [OPTION...] [USER@]HOST::SRC... [DEST]
        rsync [OPTION...] rsync://[USER@]HOST[:PORT]/SRC... [DEST]
  Push: rsync [OPTION...] SRC... [USER@]HOST::DEST
        rsync [OPTION...] SRC... rsync://[USER@]HOST[:PORT]/DEST
source manpages: rsync