README: update attach instructions for testnet users (#14448)
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README.md
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README.md
@ -90,15 +90,17 @@ here.
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Specifying the `--testnet` flag however will reconfigure your Geth instance a bit:
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Specifying the `--testnet` flag however will reconfigure your Geth instance a bit:
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* Instead of using the default data directory (`~/.ethereum` on Linux for example), Geth will nest
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* Instead of using the default data directory (`~/.ethereum` on Linux for example), Geth will nest
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itself one level deeper into a `testnet` subfolder (`~/.ethereum/testnet` on Linux).
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itself one level deeper into a `testnet` subfolder (`~/.ethereum/testnet` on Linux). Note, on OSX
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and Linux this also means that attaching to a running testnet node requires the use of a custom
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endpoint since `geth attach` will try to attach to a production node endpoint by default. E.g.
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`geth attach <datadir>/testnet/geth.ipc`. Windows users are not affected by this.
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* Instead of connecting the main Ethereum network, the client will connect to the test network,
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* Instead of connecting the main Ethereum network, the client will connect to the test network,
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which uses different P2P bootnodes, different network IDs and genesis states.
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which uses different P2P bootnodes, different network IDs and genesis states.
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*Note: Although there are some internal protective measures to prevent transactions from crossing
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*Note: Although there are some internal protective measures to prevent transactions from crossing
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over between the main network and test network (different starting nonces), you should make sure to
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over between the main network and test network, you should make sure to always use separate accounts
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always use separate accounts for play-money and real-money. Unless you manually move accounts, Geth
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for play-money and real-money. Unless you manually move accounts, Geth will by default correctly
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will by default correctly separate the two networks and will not make any accounts available between
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separate the two networks and will not make any accounts available between them.*
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them.*
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#### Docker quick start
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#### Docker quick start
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