Get the shasum hash of an entire directory (recursively)

hash_dir.sh

#!/bin/sh
find ./src -type f -print0 | sort -z | xargs -0 shasum | shasum

good

Use LC_ALL=C sort -z if you want consistent sort order across different locales/environment settings.

@YourMJK - good call! i guess this is better:

#!/bin/sh
find ./src -type f -print0 | LC_ALL=C sort -z | xargs -0 shasum | shasum

Stumbled across this while doing some benchmarks for a Rust crate I wrote to hash directories.

If a package installation isn't too much, give paq a try.

@gregl83 - nice! thanks for adding this link / sharing your project. it looks pretty cool (and i like the explanation in the "how it works" section).

@skratchdot np, maybe it's helpful for another person!

There are trade-offs. The original solution should work on nix systems without requiring additional packages.

You might consider explicitly using SHA256 in your shasum invocations.