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Michiel Borkent 2024-08-16 15:40:34 +02:00
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README.md
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@ -40,10 +40,10 @@ As one user described it:
## Quickstart ## Quickstart
For installation options check [Installation](https://github.com/babashka/babashka#installation). For installation options check [Installation](https://github.com/babashka/babashka#installation).
For quick installation use: For quick installation using `bash`, use:
``` shell ``` shell
$ bash < <(curl -s https://raw.githubusercontent.com/babashka/babashka/master/install) bash < <(curl -s https://raw.githubusercontent.com/babashka/babashka/master/install)
``` ```
or grab a binary from [Github or grab a binary from [Github
@ -53,9 +53,12 @@ anywhere on the path.
Then you're ready to go: Then you're ready to go:
``` shellsession ``` shellsession
$ ls | bb -i '(filter fs/directory? *input*)' time bb -e '(->> (fs/list-dir ".") (filter fs/directory?) (map fs/normalize) (map str) (take 3))'
("doc" "resources" "sci" "script" "src" "target" "test") ```
bb took 4ms.
``` clojure
(".build" "feature-lanterna" ".repl")
bb -e 0,01s user 0,01s system 70% cpu 0,017 total
``` ```
## Support :heart: ## Support :heart:
@ -120,46 +123,6 @@ by Daniel Higginbotham, who has also helped a lot of people learn Clojure with
[Clojure for the Brave and [Clojure for the Brave and
True](https://www.braveclojure.com/clojure-for-the-brave-and-true/). True](https://www.braveclojure.com/clojure-for-the-brave-and-true/).
## Examples
Read the output from a shell command as a lazy seq of strings:
``` shell
$ ls | bb -i '(take 2 *input*)'
("CHANGES.md" "Dockerfile")
```
Read EDN from stdin and write the result to stdout:
``` shell
$ bb '(vec (dedupe *input*))' <<< '[1 1 1 1 2]'
[1 2]
```
Read more about `*input*` and in- and output flags
[here](https://book.babashka.org/#_input_and_output_flags).
Execute a script. E.g. print the current time in California using the
`java.time` API:
File `pst.clj`:
``` clojure
#!/usr/bin/env bb
(def now (java.time.ZonedDateTime/now))
(def LA-timezone (java.time.ZoneId/of "America/Los_Angeles"))
(def LA-time (.withZoneSameInstant now LA-timezone))
(def pattern (java.time.format.DateTimeFormatter/ofPattern "HH:mm"))
(println (.format LA-time pattern))
```
``` shell
$ bb pst.clj
05:17
```
More examples can be found [here](examples/README.md).
## Try online ## Try online
You can try babashka online with Nextjournal's babashka [notebook You can try babashka online with Nextjournal's babashka [notebook