Indeed, the linear type systems makes sure that you won't forget to dispose of resources.
Linear types enable manual memory management without memory leaks, use-after-free, double free errors, garbage collection, or any runtime overhead in either time or space other than having an allocator available. More generally, it enables us to manage any resource (file handles, socket handles, etc.) that has a lifecycle without letting us forget to dispose of the resource (e.g. leaving a file handle open), dispose of it twice, or use it after disposal (e.g. reading from a closed socket), all without runtime overhead.
Linear types enable manual memory management without memory leaks, use-after-free, double free errors, garbage collection, or any runtime overhead in either time or space other than having an allocator available. More generally, it enables us to manage any resource (file handles, socket handles, etc.) that has a lifecycle without letting us forget to dispose of the resource (e.g. leaving a file handle open), dispose of it twice, or use it after disposal (e.g. reading from a closed socket), all without runtime overhead.
The Austral tutorial's chapter on linear types (https://austral-lang.org/tutorial/linear-types) explains how this works in a fairly clear way.