doc: Mention bitcoin wrapper executable in documentation

Author: ryanofsky

doc/JSON-RPC-interface.md

@@ -62,6 +62,8 @@ bitcoin-cli -named createwallet wallet_name=mywallet load_on_startup=true
 bitcoin-cli -named createwallet mywallet load_on_startup=true
 ```
 
+`bitcoin rpc` can also be substituted for `bitcoin-cli -named`, and is a newer alternative.
+
 ## Versioning
 
 The RPC interface might change from one major version of Bitcoin Core to the

doc/README.md

@@ -17,6 +17,9 @@ Unpack the files into a directory and run:
 
 - `bin/bitcoin-qt` (GUI) or
 - `bin/bitcoind` (headless)
+- `bin/bitcoin` (wrapper command)
+
+The `bitcoin` command supports subcommands like `bitcoin gui`, `bitcoin node`, and `bitcoin rpc` exposing different functionality. Subcommands can be listed with `bitcoin help`.
 
 ### Windows
 

doc/build-osx.md

@@ -199,6 +199,10 @@ cmake --build build --target deploy
 Bitcoin Core should now be available at `./build/bin/bitcoind`.
 If you compiled support for the GUI, it should be available at `./build/bin/bitcoin-qt`.
 
+There is also a multifunction command line interface at `./build/bin/bitcoin`
+supporting subcommands like `bitcoin node`, `bitcoin gui`, `bitcoin rpc`, and
+others that can be listed with `bitcoin help`.
+
 The first time you run `bitcoind` or `bitcoin-qt`, it will start downloading the blockchain.
 This process could take many hours, or even days on slower than average systems.
 

doc/build-unix.md

@@ -174,4 +174,5 @@ This example lists the steps necessary to setup and build a command line only di
     cmake --build build
     ctest --test-dir build
     ./build/bin/bitcoind
+    ./build/bin/bitcoin help
 

doc/cjdns.md

@@ -113,3 +113,5 @@ To see which CJDNS peers your node is connected to, use `bitcoin-cli -netinfo 4`
 or the `getpeerinfo` RPC (i.e. `bitcoin-cli getpeerinfo`).
 
 You can use the `getnodeaddresses` RPC to fetch a number of CJDNS peers known to your node; run `bitcoin-cli help getnodeaddresses` for details.
+
+`bitcoin rpc` can also be substituted for `bitcoin-cli`.

doc/external-signer.md

@@ -14,6 +14,8 @@ Start Bitcoin Core:
 $ bitcoind -signer=../HWI/hwi.py
 ```
 
+`bitcoin node` can also be substituted for `bitcoind`.
+
 ### Device setup
 
 Follow the hardware manufacturers instructions for the initial device setup, as well as their instructions for creating a backup. Alternatively, for some devices, you can use the `setup`, `restore` and `backup` commands provided by [HWI](https://github.com/bitcoin-core/HWI).
@@ -40,6 +42,8 @@ Create a wallet, this automatically imports the public keys:
 $ bitcoin-cli createwallet "hww" true true "" true true true
 ```
 
+`bitcoin rpc` can also be substituted for `bitcoin-cli`.
+
 ### Verify an address
 
 Display an address on the device:

doc/managing-wallets.md

@@ -15,6 +15,8 @@ The following command, for example, creates a descriptor wallet. More informatio
 $ bitcoin-cli createwallet "wallet-01"
 ```
 
+`bitcoin rpc` can also be substituted for `bitcoin-cli`.
+
 By default, wallets are created in the `wallets` folder of the data directory, which varies by operating system, as shown below. The user can change the default by using the `-datadir` or `-walletdir` initialization parameters.
 
 | Operating System | Default wallet directory                                    |

doc/multiprocess.md

@@ -25,8 +25,8 @@ make -C depends NO_QT=1 MULTIPROCESS=1
 HOST_PLATFORM="x86_64-pc-linux-gnu"
 cmake -B build --toolchain=depends/$HOST_PLATFORM/toolchain.cmake
 cmake --build build
-build/bin/bitcoin-node -regtest -printtoconsole -debug=ipc
-BITCOIND=$(pwd)/build/bin/bitcoin-node build/test/functional/test_runner.py
+build/bin/bitcoin -m node -regtest -printtoconsole -debug=ipc
+BITCOIN_CMD="bitcoin -m" build/test/functional/test_runner.py
 ```
 
 The `cmake` build will pick up settings and library locations from the depends directory, so there is no need to pass `-DENABLE_IPC=ON` as a separate flag when using the depends system (it's controlled by the `MULTIPROCESS=1` option).
@@ -41,6 +41,11 @@ By default when `-DENABLE_IPC=ON` is enabled, the libmultiprocess sources at [..
 
 ## Usage
 
-`bitcoin-node` is a drop-in replacement for `bitcoind`, and `bitcoin-gui` is a drop-in replacement for `bitcoin-qt`, and there are no differences in use or external behavior between the new and old executables. But internally after [#10102](https://github.com/bitcoin/bitcoin/pull/10102), `bitcoin-gui` will spawn a `bitcoin-node` process to run P2P and RPC code, communicating with it across a socket pair, and `bitcoin-node` will spawn `bitcoin-wallet` to run wallet code, also communicating over a socket pair. This will let node, wallet, and GUI code run in separate address spaces for better isolation, and allow future improvements like being able to start and stop components independently on different machines and environments.
-[#19460](https://github.com/bitcoin/bitcoin/pull/19460) also adds a new `bitcoin-node` `-ipcbind` option and a `bitcoind-wallet` `-ipcconnect` option to allow new wallet processes to connect to an existing node process.
-And [#19461](https://github.com/bitcoin/bitcoin/pull/19461) adds a new `bitcoin-gui` `-ipcconnect` option to allow new GUI processes to connect to an existing node process.
+Recommended way to use multiprocess binaries is to invoke `bitcoin` CLI like `bitcoin -m node -debug=ipc` or `bitcoin -m gui -printtoconsole -debug=ipc`.
+
+When the `-m` (`--multiprocess`) option is used the `bitcoin` command will execute multiprocess binaries instead of monolithic ones (`bitcoin-node` instead of `bitcoind`, and `bitcoin-gui` instead of `bitcoin-qt`). The multiprocess binaries can also be invoked directly, but this is not recommended as they may change or be renamed in the future, and they are not installed in the PATH.
+
+The multiprocess binaries currently function the same as the monolithic binaries, except they support an `-ipcbind` option.
+
+In the future, after [#10102](https://github.com/bitcoin/bitcoin/pull/10102) they will have other differences. Specifically `bitcoin-gui` will spawn a `bitcoin-node` process to run P2P and RPC code, communicating with it across a socket pair, and `bitcoin-node` will spawn `bitcoin-wallet` to run wallet code, also communicating over a socket pair. This will let node, wallet, and GUI code run in separate address spaces for better isolation, and allow future improvements like being able to start and stop components independently on different machines and environments. [#19460](https://github.com/bitcoin/bitcoin/pull/19460) also adds a new `bitcoin-wallet -ipcconnect` option to allow new wallet processes to connect to an existing node process.
+And [#19461](https://github.com/bitcoin/bitcoin/pull/19461) adds a new `bitcoin-gui -ipcconnect` option to allow new GUI processes to connect to an existing node process.

doc/multisig-tutorial.md

@@ -31,6 +31,8 @@ do
 done
 ```
 
+`bitcoin rpc` can also be substituted for `bitcoin-cli`.
+
 Extract the xpub of each wallet. To do this, the `listdescriptors` RPC is used. By default, Bitcoin Core single-sig wallets are created using path `m/44'/1'/0'` for PKH, `m/84'/1'/0'` for WPKH, `m/49'/1'/0'` for P2WPKH-nested-in-P2SH and `m/86'/1'/0'` for P2TR based accounts. Each of them uses the chain 0 for external addresses and chain 1 for internal ones, as shown in the example below.
 
 ```

doc/offline-signing-tutorial.md

@@ -34,6 +34,8 @@ We are going to first create an `offline_wallet` on the offline host. We will th
 }
 ```
 
+`bitcoin rpc` can also be substituted for `bitcoin-cli`.
+
 > [!NOTE]
 > The use of a passphrase is crucial to encrypt the wallet.dat file. This encryption ensures that even if an unauthorized individual gains access to the offline host, they won't be able to access the wallet's contents. Further details about securing your wallet can be found in  [Managing the Wallet](https://github.com/bitcoin/bitcoin/blob/master/doc/managing-wallets.md#12-encrypting-the-wallet)