Depending on how long ago your website was first indexed by G, it may not be showing any backlinks yet (allow up to 2 months for G to credit IBL's). Also, the link command will not necessarily show all links to your site. Formerly links: only showed backlinks from PR4 or greater pages, but now it will commonly show PR3 and lower pages as well. Try typing in your domain name in this format: .domain. -site:www.domain.com and you should get a list of all pages in the G index that reference your site. They may not necessarily be links - they may just be a reference to your site without a hyperlink.