http://mysite.exmaple.com/login/login.html

http://mysite.example.com/index.html

wget -r --http-user username --http-password 'mypassword' http://mysite.example.com/index.html

wget --save-cookies cookies.txt
     --keep-session-cookies
     --post-data 'user=username&password=mypassword'
     --delete-after
     http://mysite.example.com/login/login.html

wget --load-cookies cookies.txt
     http://mysite.example.com/index.html