If the cli returns json, you can use [jq](https://jqlang.github.io/jq/) to process it.

[jq has a pretty great math scripting](https://jqlang.github.io/jq/manual/#math).

k00b

  in order to compute the total spendable and total receivable msats. Has anyone already written this?

It is easy to parse it when there is only one channel, not so easy for two or more.

lightning

I've been trying to parse in Bash (with `grep` and `sed`) the output of `lightning-cli listpeerchannels`  in order to compute the total spendable and total receivable msats. Has anyone already written this?
It is easy to parse it when there is only one channel, not so easy for two or more.