Ubuntu 14.04 Hashcat command?

[Ubuntu1404]

Ok so I got everything set up, I got tons of wordslists and etc, I got hash file set up and etc, but when i try to run this (yes I did CD to the hashcat folder):

Code:

hashcat -m 2811 --output-file=cracked.txt --remove hash.txt wordlists/

It gives me this:
hashcat: command not found


Help?