Like most commands on Linux, SSH can be used with input/output redirection via | (Unix Pipe). SSH can be used with this pipeline too. The basic concept here is understanding how the Unix pipeline works.

When you understand the way pipes work, you can get seriously creative. This article covers what happens when you combine Unix pipes and SSH. It should be noted that since Unix pipes can be just about anything, there are no doubt going to be commands not on this list would also be useful.

NOTE: Among other things, this article shows how to do remote hard drive backup and restoration, by creating an image (.img file) of a hard drive on a remote system, assuming that you have sufficient space on the remote backup drive for the image file.

Source: How to Use SSH Pipes on Linux