`ethermintd` is the all-in-one command-line interface. It supports wallet management, queries and transaction operations {synopsis}
## Pre-requisite Readings
- [Installation](./installation.md) {prereq}
## Build and Configuration
### Using `ethermintd`
After you have obtained the latest `ethermintd` binary, run:
```bash
ethermintd [command]
```
Check the version you are running using
```bash
ethermintd version
```
There is also a `-h`, `--help` command available
```bash
ethermintd -h
```
::: tip
You can also enable auto-completion with the `ethermintd completion` command. For example, at the start of a bash session, run `. <(ethermintd completion)`, and all `ethermintd` subcommands will be auto-completed.
:::
### Config and data directory
By default, your config and data are stored in the folder located at the `~/.ethermintd` directory.
:::warning
Make sure you have backed up your wallet storage after creating the wallet or else your funds may be inaccessible in case of accident forever.
:::
To specify the `ethermintd` config and data storage directory; you can update it using the global flag `--home <directory>`
### Client configuration
We can view the default client config setting by using `ethermintd config` command:
```bash
ethermintd config
{
"chain-id": "",
"keyring-backend": "os",
"output": "text",
"node": "tcp://localhost:26657",
"broadcast-mode": "sync"
}
```
We can make changes to the default settings upon our choices, so it allows users to set the configuration beforehand all at once, so it would be ready with the same config afterward.
Alternatively, we can directly make the changes to the config values in one place at client.toml. It is under the path of `.ethermint/config/client.toml` in the folder where we installed ethermint:
After the necessary changes are made in the `client.toml`, then save. For example, if we directly change the chain-id from `ethermint_9000-1` to `etherminttest_9000-1`, and output to number, it would change instantly as shown below.
