ncdu also has the really cool feature of being able to dump its internal scan state to stdout and having a flag to load that state, which means you can pipe SSH output from ncdu on a server into a local file. Then you can inspect what's taking up space on a VPS without having to log in on it.
It's especially great if the server is out of disk space and/or the server is under too heavy a load to keep an SSH connection going; you can investigate what's clogging up space (usually logfiles gone awry) and clean up accordingly.
It's one of the default utilities I have installed on my servers for a very good reason and it's helped out countless times over the past few years for hobby servers of mine (aka the ones where "scaling it up" isn't an option because the budget is constrained by it being a hobby).
It's especially great if the server is out of disk space and/or the server is under too heavy a load to keep an SSH connection going; you can investigate what's clogging up space (usually logfiles gone awry) and clean up accordingly.
It's one of the default utilities I have installed on my servers for a very good reason and it's helped out countless times over the past few years for hobby servers of mine (aka the ones where "scaling it up" isn't an option because the budget is constrained by it being a hobby).