wget(1) -m ftp://echanges.dila.gouv.fr/LEGI -t0 -nH
The non-interactive network downloader
-m
--mirror
    Turn on options suitable for mirroring.  This option turns on recursion and time-stamping, sets
    infinite recursion depth and keeps FTP directory listings.  It is currently equivalent to -r -N -l
    inf --no-remove-listing.
wget [option]... [URL]...
-t number
--tries=number
    Set number of retries to number.  Specify 0 or inf for infinite retrying.  The default is to retry 20
    times, with the exception of fatal errors like "connection refused" or "not found" (404), which are
    not retried.
-nH
--no-host-directories
    Disable generation of host-prefixed directories.  By default, invoking Wget with -r
    http://fly.srk.fer.hr/ will create a structure of directories beginning with fly.srk.fer.hr/.  This
    option disables such behavior.
source manpages: wget