nreplops-tool

nREPL Ops Tool

Overview

To be written; here’s some ideas

• a non-interactive nrepl client
• shim between nrepl and other tools

Features

• Works well with jq
• Works well with Babashka

Usage scenarios

• Capture data from a remote Clojure host and post-process it with Babashka locally
• Write a command line scripts for querying things that you often need when debugging your system

Table of contents

• Running nr
  • overview
  • command line options
  • exit status
• Using nr without SSH
• Using nr with Jq (jq)
• Using with Babashka (bb)
• REPL scripts
  • sample scripts

Running nr

Expression as command line argument

$ nr -e '(+ 1 2)'
3

Expression through pipe

$ echo '(+ 1 2)' | nr
3

Expressions in file

Create a file plus.clj with the following content:

(+ 1 2)

Pass the file to nr through the command line:

$ nr plus.clj
3

Expressions as script file

Create a script file plus.nr.clj with the following content:

#!/usr/bin/env -S nr -!

(+ 1 2)

Ensure that the file is executable and then run it like so:

$ ./plus.nr.clj
3

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