1、先建立backup檔案夾
cd /var/opt/mssql/
mkdir ./backup
2、修改backup檔案夾的檔案歸屬和分組
chown mssql:mssql ./backup
3、執行備份語句,利用sqlcmd指令執行
BACKUP DATABASE yourDB
TO DISK = '/var/opt/mssql/backup/yourDB2018-2-6.bak'
WITH FORMAT;
GO