Tried to do the following on nethserver 7
Connect to SQL Server with sqlcmd
On your Linux box, open a command terminal. Run sqlcmd with parameters for your SQL Server name (-S), the user name (-U), and the password (-P).
The following command connects to the local SQL Server instance (localhost) on Linux:
sqlcmd -S localhost -U SA -P ‘<My-PassWord-From-Setup>’
The system says that sqlcmd command not found.