Here is a simple utility I wrote to process the MOSS usage logs (when turned on at Central Administration >> Operations >> Usage Analysis Processing ). Sometimes it's useful to have alternate source for the user activity, than the usage reports offered in MOSS OOB through the Site Settings.

I have slightly modified the Parser class found at http://www.sharepointblogs.com/wpowell/archive/2007/06/22/moss-usage-log-processing-file-processing.aspx . The MOSSLogParser.exe utility loops through all log files and creates a single CSV file, ready for Excel pivot tables.

the syntax: MOSSLogParser.exe <start_path> <search_pattern>

• start_path - path to the folder where logs files are defined. The parser will look down, traversing sub-folder structure. Default value is: "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\12\Logs" Note the absense of ending slash
• search_pattern - the pattern used to filter the logs. Default value is "0*.log"

samples:

• MOSSLogParser.exe
• MOSSLogParser.exe \\share\logs
• MOSSLogParser.exe E:\usage "*.log"