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add gaiadebug readme

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Ethan Buchman 2018-06-13 15:17:18 -07:00
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# Gaiadebug
Simple tool for simple debugging.
We try to accept both hex and base64 formats and provide a useful response.
Note we often encode bytes as hex in the logs, but as base64 in the JSON.
## Pubkeys
The following give the same result:
```
gaiadebug pubkey TZTQnfqOsi89SeoXVnIw+tnFJnr4X8qVC0U8AsEmFk4=
gaiadebug pubkey 4D94D09DFA8EB22F3D49EA17567230FAD9C5267AF85FCA950B453C02C126164E
```
## Txs
Pass in a hex/base64 tx and get back the full JSON
```
gaiadebug tx <hex or base64 transaction>
```
## Hack
This is a command with boilerplate for using Go as a scripting language to hack
on an existing Gaia state.
Currently we have an example for the state of gaia-6001 after it
[crashed](https://github.com/cosmos/cosmos-sdk/blob/master/cmd/gaia/testnets/STATUS.md#june-13-2018-230-est---published-postmortem-of-gaia-6001-failure).
If you run `gaiadebug hack $HOME/.gaiad` on that
state, it will do a binary search on the state history to find when the state
invariant was violated.