あとでまとめる。Ubuntu 16.04 LTE(64bit) on VMWare Playerで実施。 いきなりサーバにのせるのはこわいのでローカルに仮想作ってテスト。

sudo apt-get update
sudo apt-cache search steam
sudo apt-get install steam

https://developer.valvesoftware.com/wiki/SteamCMD

mkdir steamcmd
cd steamcmd/
wget https://steamcdn-a.akamaihd.net/client/installer/steamcmd_linux.tar.gz
tar xzvf steamcmd_linux.tar.gz
./steam.sh

Running Steam on ubuntu 14.04 32-bit
STEAM_RUNTIME is enabled automatically
Unpack runtime failed, error code 1
Error:
Couldn't set up the Steam Runtime. Are you running low on disk space?
Continuing...
Press enter to continue:

うまくいってないっぽい。ユーザが必要らしい

sudo useradd -m steam
sudo su - steam
mkdir ~/steamcmd
cd ~/steamcmd/
wget https://steamcdn-a.akamaihd.net/client/installer/steamcmd_linux.tar.gz
tar xzvf steamcmd_linux.tar.gz
./steam.sh

※省略※
[----] Cleaning up...
[----] Update complete, launching Steam...
Redirecting stderr to '/home/steam/Steam/logs/stderr.txt'
[  0%] Checking for available updates...
[----] Verifying installation...
Steam Console Client (c) Valve Corporation
-- type 'quit' to exit --
Loading Steam API...Created shared memory when not owner SteamController_Shared_mem
OK.

Steam>

動いた！

Steam>login anonymous

Connecting anonymously to Steam Public...Logged in OK
Waiting for license info...OK

Steam>force_install_dir savres

Steam>app_update 393250
 Update state (0x3) reconfiguring, progress: 0.00 (0 / 0)
 Update state (0x61) downloading, progress: 20.97 (7705610 / 36749185)
Success! App '393250' fully installed.

Steam>quit