curl --user name:password http://somesite.com -v

curl -b cookies.txt -c cookies.txt --data "Username=xx&Password=xx&Login=Login" [urlthatyour form submits]

curl --data "Username=xx&Password=xx&Login=Login" [url that your form submits]

# Save username and password for later use
set document.browse.forms.show_formhist = 1
    # Do not ask for confirmation before a form is submitted
set document.browse.forms.confirm_submit = 0

$ echo "username=myname&password=mypassword" | lynx "url of the form" -post_data