tldr/pages/common/bb.md

bb

Native Clojure interpreter for scripting. More information: https://book.babashka.org/#usage.

• Evaluate an expression:

bb {{[-e|--eval]}} "(+ 1 2 3)"

• Evaluate a script file:

bb {{[-f|--file]}} {{path/to/script.clj}}

• Bind [i]nput to a sequence of lines from stdin:

printf "first\nsecond" | bb -i "(map clojure.string/capitalize *input*)"

• Bind [I]nput to a sequence of EDN (Extensible Data Notation) values from stdin:

echo "{:key 'val}" | bb -I "(:key (first *input*))"