Usage

mssql-cli

% mssql-cli -S host -U user -P pass -d db

.env の設定が正しければ mssql-cli のみで接続可能

> \ld # list databases
> \lt # list tables

see below:
https://github.com/dbcli/mssql-cli/blob/master/doc/usage_guide.md

sqlcmd

% sqlcmd -S host -d db -U user -P pass

sqlpackage

$ sqlpackage /a:Extract /scs:$SQLPACKAGE_CONN /tf:./dump/dump.dacpac

see below:
https://docs.microsoft.com/ja-jp/sql/tools/sqlpackage?view=sql-server-2017