Google has closed algorithm update on Google Commands and Search Engine Operators it is now Useless for seo work . Web Search: allinanchor:, allintext:, allintitle:, allinurl:, cache:, define:, filetype:, id:, inanchor:, info:, intext:, intitle:, inurl:, link:, related:, site: Image Search: allintitle:, allinurl:, filetype:, inurl:, intitle:, site: Groups:allintext:, allintitle:, author:, group:, insubject:, intext:, intitle: Directory allintext:, allintitle:, allinurl:, ext:, filetype:, intext:, intitle:, inurl: News allintext:, allintitle:, allinurl:, intext:, intitle:, inurl:, location:, source: Product Search allintext:, allintitle:
These are working but for example when you want to check links with link: command then you wont see all of them approved by Google. So I think this list is in some way true.