Update docs wrt new wallet and rpc functionality (#5528)

book/src/validator-monitor.md

@@ -23,7 +23,7 @@ $ solana-gossip --entrypoint testnet.solana.com:8001 spy
 ```
 
 ## Check Vote Activity
-The vote pubkey for the validator can also be found by running:
+The vote pubkey for the validator can be found by running:
 ```bash
 $ solana-keygen pubkey ~/validator-vote-keypair.json
 ```
@@ -38,7 +38,7 @@ $ solana-wallet show-vote-account 2ozWvfaXQd1X6uKh8jERoRGApDqSqcEy6fF1oN13LL2G
 Your lamport balance should decrease by the transaction fee amount as your
 validator submits votes, and increase after serving as the leader:
 ```bash
-$ solana-wallet --keypair ~/validator-keypair.json
+$ solana-wallet balance
 ```
 
 ## Check Slot Number

book/src/validator-start.md

@@ -34,20 +34,38 @@ $ solana-gossip --entrypoint testnet.solana.com:8001 spy
 ```
 
 ## Start your Validator
-Now create an identity keypair for your validator by running:
+Create an identity keypair for your validator by running:
 ```bash
 $ solana-keygen new -o ~/validator-keypair.json
 ```
-and airdrop yourself some lamports to get started:
+
+### Wallet Configuration
+You can set solana-wallet configuration to use your validator keypair for all
+following commands:
+```bash
+$ solana-wallet set --keypair ~/validator-keypair.json
+```
+
+**All following solana-wallet commands assume you have set `--keypair` config to
+**your validator identity keypair.**
+If you haven't, you will need to add the `--keypair` argument to each command, like:
 ```bash
 $ solana-wallet --keypair ~/validator-keypair.json airdrop 1000
 ```
+(You can always override the set configuration by explicitly passing the
+`--keypair` argument with a command.)
+
+### Validator Start
+Airdrop yourself some lamports to get started:
+```bash
+$ solana-wallet airdrop 1000
+```
 
 Your validator will need a vote account.  Create it now with the following
 commands:
 ```bash
 $ solana-keygen new -o ~/validator-vote-keypair.json
-$ solana-wallet --keypair ~/validator-keypair.json create-vote-account ~/validator-vote-keypair.json ~/validator-keypair.json 1
+$ solana-wallet create-vote-account ~/validator-vote-keypair.json ~/validator-keypair.json 1
 ```
 
 Then use one of the following commands, depending on your installation

book/src/validator-testnet.md

@@ -11,6 +11,13 @@ software, which may feature breaking changes. Generally, the edge testnet tracks
 the tip of master, beta tracks the latest tagged minor release, and stable
 tracks the most stable tagged release.
 
+### Get Testnet Version
+You can submit a JSON-RPC request to see the specific version of the cluster.
+```bash
+$ curl -X POST -H 'Content-Type: application/json' -d '{"jsonrpc":"2.0","id":1, "method":"getVersion"}' edge.testnet.solana.com:8899
+{"jsonrpc":"2.0","result":{"solana-core":"0.18.0-pre1"},"id":1}
+```
+
 ## Using a Different Testnet
 This guide is written in the context of testnet.solana.com, our most stable
 cluster. To participate in another testnet, you will need to modify some of the
@@ -42,6 +49,16 @@ different testnet. For instance:
 $ solana-wallet --url http://beta.testnet.solana.com:8899 balance
 ```
 
+Solana-wallet includes `get` and `set` configuration commands to automatically
+set the `--url` argument for future wallet commands.
+For example:
+```bash
+$ solana-wallet set --url http://beta.testnet.solana.com:8899
+$ solana-wallet balance # Same result as command above
+```
+(You can always override the set configuration by explicitly passing the `--url`
+argument with a command.)
+
 Solana-gossip and solana-validator commands already require an explicit
 `--entrypoint` argument. Simply replace testnet.solana.com in the examples with
 an alternate url to interact with a different testnet. For example: