Ban:
/mode #channel +b *!*@hostmask

Real name:
/mode #channel +b r:*!*@hostmask

Mute:
/mode #channel +b m:*!*@hostmask

Banning a bad channel:
/mode +b j:#badchannel

Mass ban:
/mode #channel +b *!*@*.hostmask

Irccloud bans:
/mode #channel +b *!uid12345@*.irccloud.com

isexybot bans in #ifops:

!kwf nick reason

!kwf *!*@hostmask reason

!modeall +b *!*@hostmask

!botban nick

!trollban nick

!findban *!*@hostmask