go-mtree VS NATS

go-mtree can take care about it. It calculates files hashes and you can use it to compare it later.

There is old unix utility called 'mtree' (there also is fully binary static compatible with mtree version on github go-mtree ) to check integrity of files. Another solution is - ZFS that do it dynamically

There is FreeBSD utility called mtree that also ported to Linux systems, that walk specified filesystem and creates hashes for all found content which later can be used to check integrity against corruption/modification. If your distribution of choice doesn't have ported version of mtree, you can use multiplatform version go-mtree that replicate the same workflow

go-mtree # Integrity

go-mtree: portable implementation of well known utility mtree) that can be used to save/test file's integrity as well directory structures. Open source, portable across most popular operation systems, no dependencies, single executable file.

There is standard utility for integrity testing mtree) that ported to linux too. Also there is multi platform version of upstream written in Go (read works everywhere from one single file) that called go-mtree

SHA1 is dead, and there is a better dedicated tool mtree(8) for such tasks (which by the way exists as implementation in Go as go-mtree ) but I believe OP wants to check versions (like fzf --version) not an integrity of files

nats: Golang client for NATS, the cloud native messaging system

Install the nats.go package

Now that our NATS server is running, we'll be using Go and Node.js clients to connect to it for simple demonstration. Not familiar with Go or Node? Don't worry NATS has clients available in over 40 languages!

You can build monolith applications and if they need cross communication, rely on something like Nats: https://github.com/nats-io/nats.go

You could start by looking/reading how it is implemented in production ala https://github.com/nats-io/nats.go