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Add notes about using jq

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Duke Leto
2021-12-10 08:40:51 -05:00
parent 1ce50447ba
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doc/developer-notes.md
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@@ -22,7 +22,26 @@ cd ~/.hush/HUSH3
rm zindex.dat blocks chainstate database notarizations hushstate
```
It's possible to confused hush if you ran old code, stop, restart, and then write out zindex.dat that is incorrect, with later hushds will load from disk and believe.
It's possible to confused hush if you ran old code, stop, restart, and then write out zindex.dat that is incorrect, which later hushds will load from disk and believe.
# Parsing RPC output with jq
jq is a very useful tool to parse JSON output, install it with:
apt install jq
Let's say you want to parse a very large output from `listunspent` which has spendable and
unspendable funds mixed together. This can happen when you import a viewing key. Funds from
the address of a viewing key will have `spendable = false` :
hush-cli listunspent|jq '.[] | {spendable, address, amount} | select(.spendable != false)'
The above command will only show spendable UTXOs. The jq language is very powerful and is very
useful for devops and developer scripts.
The jq manual can be found here: https://stedolan.github.io/jq/manual/
# Making a new release of Hush