You can download Ubuntu (Debian) console of Minergate from official website
Link to latest version is:
https://minergate.com/downloads/console
From Ubuntu console, download the package
wget https://minergate.com/download/deb-cli -O minergate-cli.deb
Install the package via dpkg
sudo dpkg -i minergate-cli.deb
Then you can use the console as reported in official guideline
minergate-cli -user your@mail.com -fcn+xmr
nohup minergate-cli –user 380961726999@ya.ru –xmr 1