$ echo 'export PATH="$PATH:/opt/mssql-tools/bin"' >> ~/.bash_profile
 $ echo 'export PATH="$PATH:/opt/mssql-tools/bin"' >> ~/.bashrc
 $ source ~/.bashrc
 
 $ sqlcmd -S . -Usa -PXxXxXx
 1> select @@version
 2> go
 
 -------------------------------------------------------------------
 
 Microsoft SQL Server 2017 (RTM-CU7) (KB4229789) - 14.0.3026.27 (X64)
         May 10 2018 12:38:11
         Copyright (C) 2017 Microsoft Corporation
         Developer Edition (64-bit) on Linux (CentOS Linux 7 (Core))