> ScriptAlias /cgi-bin/ "/home1/irteam/gaga/cgi-bin/"
> I haven't found the related directive to the "ScriptAlias" in Nginx.
what ScriptAlias does. It is "Alias" with "Options +ExecCGI".
nginx does have an alias directive.
nginx does not "do" cgi. You can proxy_pass to a cgi-handling http server,
or fastcgi_pass or scgi_pass or something similar, to a suitable server.
Once you have your cgi-handling server working, you configure the
appropriate *_pass in the appropriate location block.
Good luck with it,
Francis Daly email@example.com