ken CLI commands

ken is a command-line interface for Klaytn Endpoint Node.

ken [options] command [command options] [arguments...]


ken has the following commands.

account Manage accounts
attach Start an interactive JavaScript environment (connect to node)
console Start an interactive JavaScript environment
dumpconfig Show configuration values
init Bootstrap and initialize a new genesis block
version Show version number
help, h Shows a list of commands or help for one command

To get a detailed usage guideline for each command, give -h option.

$ ken account -h
Manage accounts, list all existing accounts, import a private key into a new
account, create a new account or update an existing account.
Keys are stored under <DATADIR>/keystore.
It is safe to transfer the entire directory or the individual keys therein
between klay nodes by simply copying.
Make sure you backup your keys regularly.
ken account command [command options] [arguments...]
list Print summary of existing accounts
new Create a new account
update Update an existing account
import Import a private key into a new account
$ ken init -h
init [command options] [arguments...]
The init command initializes a new genesis block and definition for the network.
This is a destructive action and changes the network in which you will be

JavaScript Console

Klaytn Endpoint Node comes with JavaScript console. From the console command line, you can initiate part of Klaytn API calls to your EN. To attach to the JavaScript console, execute the following command.

$ ken attach ~/kend_home/klay.ipc
Welcome to the Klaytn JavaScript console
!instance: Klaytn/vX.X.X/XXXX-XXXX/goX.X.X
datadir: ~/kend_home
modules: admin:1.0 debug:1.0 governance:1.0 istanbul:1.0 klay:1.0 miner:1.0 net:1.0 personal:1.0 rpc:1.0 txpool:1.0

attach command connects to the running node, while console command launches a node and connects to it.

attach Start an interactive JavaScript environment (connect to node)
console Start an interactive JavaScript environment

Module APIs

If you type the module name on the console prompt, you will see the available properties and functions of the module. For the details of functions, please see Klaytn API.

> personal
listAccounts: [...],
listWallets: [...],
deriveAccount: function(),
ecRecover: function(),
getListAccounts: function(callback),
getListWallets: function(callback),
importRawKey: function(),
lockAccount: function(),
> personal.listAccounts
["0x960dba2500ab529693ef8e299210768aa0d55ec8", "0x09a04dc9ac3cd92de5ff0d45ae50ff1b618305d9", "0x36662211c072dadbf5fc1e087ddebd36df986abd", "0xbf9683cf04520eeba6d936a3478de29437c5d048"]