babashka

An extremely limited version of Clojure in Clojure for shell-scripting.

Properties:

pure (no side effects)
interprets only one form
reads from stdin and writes to stdout

Status

Experimental, mostly for fun.

Usage

bb supports the following options:

--version: if present, prints current version of bb and exits.

By default, the first argument to bb is the form to be executed. There is one special variable, *in*.

Examples:

$ echo 1 | bb '(inc *in*)'
2

$ echo '[1 1 1 1 2]' | bb '(vec (dedupe *in*))'
[1 2]

$ echo '[1 1 1 1 2]' | bb '(inc (first *in*))'
2

$ echo '[{:foo 1} {:bar 2}]' | bb '(filter :foo *in*)'
({:foo 1})

$ echo '"babashka"' | bb '(re-find (re-pattern "b.b.*") *in*)'
"babashka"

Test

Test the JVM version:

script/test

Test the native version:

BABASHKA_TEST_ENV=native script/test

Build

You will need leiningen and GraalVM.

script/compile

License

Distributed under the EPL License, same as Clojure. See LICENSE.

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