Creating a Salesforce Scratch Org Using SFDX CLI

sfdc force:org:create -a <yourScartchOrgAliasName> -d 30 -f config/project-scratch-def.json -s

If you want to create a scratch org using the Salesforce CLI please use the below the command.

sfdx force:org:create -a <aliasNameOfYourOrg> -d <duration 1-30> - f <file path> -s (defaults)

sfdc force:org:create -a <aliasNameOfYourOrg> -d 30 -f config/project-scratch-def.json -s

-d   -- Scratch org duration 1 to 30 days
-a   -- Alias name that you give for your scratch org

-s    -- defaults this org for all ongoing commands

-f    -- config file location

You can specify all your scratch org configuration in this config file before you run this command

Hope this helped you..Enjoy..!