Logging into steam via SSH to update game server?

I just recently got a server and it is linux SSH. It has installed on it Starbound. Starbound has recently updated and I need to update it but with the instructions provided I cannot seem to get it to work. I keep getting Errors like so:

http://gyazo.com/4bc57a66bc1ff9b83e704917781a6bb9....

Here are the instructions I am following:

Download Putty or another SSH client

login to your server by typing 'ssh root@YOURSERVERIP'

Now enter your servers password when prompted

change to your starbound servers directory 'cd /home/starbound/SteamCMD'

Now type 'vim ./update_starbound.sh'

On the line where you see YOURSTEAMACCOUNT and YOURSTEAMPASSWORD enter your information.

Now hit escape then hold 'shift + :' type 'wq!' then hit enter

Now you may do the following to patch your server.

'cd /home/starbound/server/linux64/'

'bspatch starbound_server starbound_server_patched starbound-loader.bspatch'

'chmod a+x starbound_server_patched'

'mv starbound_server starbound_server_org' hit y if prompted

'mv starbound_server_patched starbound_server'

Now you may follow the directions on starting your server and you're good to go!