Thanks for your answers.
I have installed BC on prem but when I execute commande :
finsql.exe Command=ExportToNewSyntax, File="C:\demo\fornav.txt", Database="Demo Database BC (14-0)", ServerName=.\BCDEMO, filter="ID=70000..79999", Logfile=C:\Log_ExportFile.txt
I get this error:
[18023703] You do not have permission to run the 'File, Export, Text' System.