exit
start -> Run -> regedit
Open a command prompt window then type in ipconfig/all Then there should be your dns server.
depends on the OS, but for most it is : defrag <DRIVE> example: defrag c:
Open a command prompt (Click Start > Run) then type ipconfig /all.
To close an Excel window, you can use the command Application.Quit in VBA (Visual Basic for Applications). Alternatively, you can simply click the "X" button in the top-right corner of the window or use the keyboard shortcut Alt + F4. If you want to close a specific workbook without quitting Excel, you can use the Workbooks("WorkbookName").Close command.
PROMPT command is an internal command, which is used to change the MS-DOS prompt. Through, the system displays the prompt bu default, when you start the computer.
CLC is the command used for this purpose. CLC clears the command window and homes the cursor
To launch the System Information window on a Windows computer, you can use the command msinfo32. You can enter this command in the Run dialog (accessed by pressing Windows + R) or in the Command Prompt. This will open the System Information tool, where you can view detailed information about your system's hardware and software configuration.
edit
Nslookup
AT
CLS means CLear Screen. it is a command used in command prompt