The man page for ss(8) states: > Please take a look at the official documentation for details regarding > filters.
However, I have been unable to find any documentation on the filters for ss, official or otherwise. There was some documentation that was removed in commit d77ce080d33370d90de8b123cd143e9599dc1ca6 (https://git.kernel.org/pub/scm/network/iproute2/iproute2.git/commit/?id=d77ce080d33370d90de8b123cd143e9599dc1ca6) which I presume is the official documentation referred to? The man page should probably be updated to either document the filter syntax directly or point to where information about it can be found.
