wget(1) -N -r -R html -nd -np -b http://wl500g-repo.googlecode.com/svn/ipkg/openwrt/
The non-interactive network downloader
-N
--timestamping
    Turn on time-stamping.
Recursive Retrieval Options
    -r
    --recursive
        Turn on recursive retrieving.    The default maximum depth is 5.
Recursive Accept/Reject Options
    -A acclist --accept acclist
    -R rejlist --reject rejlist
        Specify comma-separated lists of file name suffixes or patterns to accept or reject. Note that if any
        of the wildcard characters, *, ?, [ or ], appear in an element of acclist or rejlist, it will be
        treated as a pattern, rather than a suffix.
Directory Options
    -nd
    --no-directories
        Do not create a hierarchy of directories when retrieving recursively.  With this option turned on,
        all files will get saved to the current directory, without clobbering (if a name shows up more than
        once, the filenames will get extensions .n).
-np
--no-parent
    Do not ever ascend to the parent directory when retrieving recursively.  This is a useful option,
    since it guarantees that only the files below a certain hierarchy will be downloaded.
-b
--background
    Go to background immediately after startup.  If no output file is specified via the -o, output is
    redirected to wget-log.
wget [option]... [URL]...
source manpages: wget