SET="<Set - id >" # Enter SET ID here from which photos have to be downloaded, for eg. SET="72157604130281022"
APPKEY="<AP- key here>" #Your APP key here, get one from http://www.flickr.com/services/api/keys/
curl "http://api.flickr.com/services/rest/?method=flickr.photosets.getPhotos&api_key=$APPKEY&photoset_id=$SET&extras=original_format&per_page=500"  | sed '~s/title="[a-zA-Z0-9_ :)?(.]*//g' | awk '/id=/ {print "http://farm3.static.flickr.com/"$4"/"$2"_"$8"_o.jpg" }'  | sed  '~s/\(server=\|originalsecret=\|id=\|"\)//g' > p
wget -i p
rm p