Reusing shell scripts is hard as packaging is often complicated by itself and therefore they live scattered all over our disks and when we need a specific one the search begins.

Module.sh is set to improve upon that situation. It can fetch the required script easily from the internet, either at runtime or it can build you a script which embeds all its script dependencies.

While that might sound like it has a few challenges by its own, Module.sh does so while caching fetched scripts and checking checksums before execution.

#!/bin/sh
# yes, we aim to be POSIX compliant

# loading module.sh, if curl+eval is a problem, there are ways to avoid them
eval "$(curl -fsL "https://mdl.sh/latest")"

# using module.sh to load the hello-world module
module "helloWorld" "https://mdl.sh/misc/hello-world/hello-world-1.0.1.sh" "cksum-3769348439"

# executing the loaded module
helloWorld

If you don’t want to rely on an external service: you don’t have to. Actually, there are many reasons to host your scripts on your own server.