How to get the nREPL port for a running REPL
#clojure
Clarice Bouwer

Clarice Bouwer @cbillowes

About: Curious programmer sharing byte-sized knowledge on dev.to. Passionate about Git, GCP, TypeScript, Next.js, and DevTools. Enjoys collaborating with others and leading by example.

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How to get the nREPL port for a running REPL

Publish Date: Oct 26 '23
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I want to connect to a running REPL on my local machine outside of Visual Studio Code. The terminal output is cleared or truncated depending on the terminal.

There are two methods I know of.

Grep the processes for the name of the project that is running on the JVM. This will give a process ID. Eg. 71141

ps aux | grep name-of-the-project
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Grep the network-related information such as open connections, open socket ports with the process ID from above.

netstat -vanp tcp | grep 71141
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Find the loopback IP with the associate port. Eg. 63361

127.0.0.1.63361
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Use that port in Visual Studio Code.

To find the port from the Clojure REPL: (slurp ".nrepl-port")

See: https://stackoverflow.com/questions/77364142/how-do-i-get-the-nrepl-port-for-a-running-repl

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