Проверяй, могут быть проблемы с правами на файлы steamcmd (должны быть 777) или нет прав у пользователя, либо не в ту папку идет инсталляция.
Обнови steamcmd.
Вот, к примеру, пишут, что нужно заменить библу steamclient.so от десктопа на библу для дедика.
Apparently the Linux dedicated sever binary got packaged with the desktop version of steamclient.so.
This is actually pretty simple to fix. Unlike suggested in 0022379 you do not need to install the dynamic libraries the broken steamclient.so is linked against.
Instead replace it with the steamclient.so from your SteamCMD installation (look inside the linux32/-directory).
This fix will reward you with the following error messages on server startup:
> /home/buildbot/buildslave/steam_rel_client_linux/build/src/clientdll/applicationmanager.cpp (2990) : Assertion Failed: CApplicationManager::GetMountVolume: invalid index
> /home/buildbot/buildslave/steam_rel_client_linux/build/src/clientdll/applicationmanager.cpp (2990) : Assertion Failed: CApplicationManager::GetMountVolume: invalid index
> /home/buildbot/buildslave/steam_rel_client_linux/build/src/clientdll/applicationmanager.cpp (3118) : Assertion Failed: m_vecInstallBaseFolders.Count() > 0