man wget a écritIf a file is downloaded more than once in the same directory,
Wget's behavior depends on a few options, including -nc. In
certain cases, the local file will be clobbered, or overwritten,
upon repeated download. In other cases it will be preserved.
When running Wget without -N, -nc, -r, or p, downloading the same
file in the same directory will result in the original copy of file
being preserved and the second copy being named file.1. If that
file is downloaded yet again, the third copy will be named file.2,
and so on. When -nc is specified, this behavior is suppressed, and
Wget will refuse to download newer copies of file. Therefore,
""no-clobber"" is actually a misnomer in this mode---it's not
clobbering that's prevented (as the numeric suffixes were already
preventing clobbering), but rather the multiple version saving
that's prevented.
When running Wget with -r or -p, but without -N or -nc, re-
downloading a file will result in the new copy simply overwriting
the old. Adding -nc will prevent this behavior, instead causing
the original version to be preserved and any newer copies on the
server to be ignored.
When running Wget with -N, with or without -r or -p, the decision
as to whether or not to download a newer copy of a file depends on
the local and remote timestamp and size of the file. -nc may not
be specified at the same time as -N.
Note that when -nc is specified, files with the suffixes .html or
.htm will be loaded from the local disk and parsed as if they had
been retrieved from the Web.
c'est pourtant écrit (bon j'avoue il faut chercher un peu 😛)
donc je dirais :
wget -N [url]
ps. beau déterrage de topic ^^
