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Keeping a Log File in WinDbg

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WinDbg can write a log file that records the debugging session. This log file contains all of the contents of the Debugger Command window, including the commands that you type and the responses from the debugger.

Opening a New Log File

To open a new log file, or to overwrite a previous log file, do one of the following:

  • Choose Open/Close Log file from the Edit menu.

  • When you start WinDbg in a Command Prompt window, use the -logo command-line option.

  • Enter the .logopen (Open Log File) command. If you use the /t option, the date and time are appended to your specified file name. If you use the /u option, the log file is written in Unicode instead of in ASCII.

Appending to an Existing Log File

To append command window text to a log file, do one of the following:

  • Choose Open/Close Log file from the Edit menu.

  • When you start WinDbg in a Command Prompt window, use the -loga command-line option.

  • Enter the .logappend (Append Log File) command. If you are appending to a Unicode log file, you must use the /u option.

Closing a Log File

To close an open log file, do one of the following:

Checking Log File Status

To determine the log file status, do one of the following: