# theHarvester > A tool designed to be used in the early stages of a penetration test. > More information: . - Gather information on a domain using Google: `theHarvester --domain {{domain_name}} --source google` - Gather information on a domain using multiple sources: `theHarvester --domain {{domain_name}} --source {{google,bing,crtsh}}` - Change the limit of results to work with: `theHarvester --domain {{domain_name}} --source {{google}} --limit {{200}}` - Save the output to two files in XML and HTML format: `theHarvester --domain {{domain_name}} --source {{google}} --file {{output_file_name}}` - Display help: `theHarvester --help`