--user=user
--password=password
    Specify the username user and password password for both FTP and
    HTTP file retrieval.

origin='https://progtest.fit.cvut.cz/'

# Get the PHPSESSID cookie
wget --save-cookies phpsid.cki --keep-session-cookies "$origin"

# Get the _idp_authn_lc_key cookie
wget --load-cookies phpsid.cki  --save-cookies sso.cki --keep-session-cookies --header="Referer: $origin" 'https://progtest.fit.cvut.cz/shibboleth-fit.php'

# Send your credentials
wget --load-cookies sso.cki --save-cookies auth.cki --keep-session-cookies --post-data='j_username=usr&j_password=pwd' 'https://idp2.civ.cvut.cz/idp/Authn/UserPassword'

sudo apt-get install phantomjs

phantomjs script.js

phantomjs --ssl-protocol=any script.js

sudo apt-get install python-pip   #On a Debian based system
sudo pip install Ghost.py

curl --data "j_username=value1&j_password=value2" https://idp2.civ.cvut.cz/idp/Authn/UserPassword