The file dhusget.sh of the Copernicus Open Access Hub is provided by ESA to allow multiple downloads of the Sentinel products. The use of dhusget_plus.sh is the same of the use of dhusget.sh described here. The "-Q" command has been added to the file dhusget_plus.sh to filter the relative orbit number.
SEARCH QUERY OPTIONS
-Q (relative orbit n) : relative orbit. Possible options are: (1,2,...,175);
dhusget_plus.sh [LOGIN OPTIONS]... [SEARCH QUERY OPTIONS (... -Q 175 ...)]... [SEARCH RESULT OPTIONS]... [DOWNLOAD OPTIONS]...