problem with betterdiscord - new in linux

Have problem with install better discord from this link.

Terminal:

nellcras@Nellcras:~$ curl -O

% Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 21331 100 21331 0 0 113k 0 --:--:-- --:--:-- --:--:-- 113k

nellcras@Nellcras:~$ chmod +x betterdiscordctl

nellcras@Nellcras:~$ sudo mv betterdiscordctl /usr/local/bin nellcras@Nellcras:

what's up? Help me Q_Q

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