The Command Palette provides access to many commands for Salesforce development.
To run a command from Salesforce Extensions for VS Code, press Ctrl+Shift+P (Windows or Linux) or ⇧⌘P (macOS) and type SFDX in the command palette to see commands relevant to Salesforce development.
When a command finishes running (due to success, failure, or cancellation), a notification displays at the top of the window.
To see the output of the commands that you run, select View > Output, and then select Salesforce CLI from the dropdown menu. Alternatively, click Show in the completion notification.
To clear the output content between SFDX commands, select Settings > User Settings > Salesforce Core Configuration and check Clear Output Tab.