# wget --save-cookie cookies.txt --post-data 'name=cris&passwd=cami' "http://unsitio.net/auth.php"

# wget --load-cookies cookies.txt -p http://unsitio.net/carpeta/algo.php

wget -nc -k -R -r -k --post-data "user=usuarionombre&pass=contraseña"  --header "Cookie: __unam=ec38cfa-1588efbba23-6f87770-7; _gat=1; _ga=GA1.2.134762180.1479867140; lmssessionkey2=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--79e590a79b77c22cbd57d310a77abe392852b0aa; " 'pagina a descargar' --content-disposition