A tool designed to be used in the early stages of a penetration test. More information: https://github.com/laramies/theHarvester.
theHarvester --domain domain_name --source google
theHarvester --domain domain_name --source duckduckgo,bing,crtsh
theHarvester --domain domain_name --source google --limit 200
theHarvester --domain domain_name --source google --file output_file_name
theHarvester --help