For the most current list of commands, flags, and defaults, ask the binary directly: ```bash iii --help #lists iii's flags and available subcommands iii subcommand --help #lists the specific actions each sucommand accepts ``` Each subcommand's help also provides the defaults and environment variables that affect each command.
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# CLI
For the most current list of commands, flags, and defaults, ask the binary directly:
```bash
iii --help #lists iii's flags and available subcommands
iii subcommand --help #lists the specific actions each sucommand accepts
```
Each subcommand's help also provides the defaults and environment variables that affect each
command.
## Trigger a function from the CLI
`iii trigger <function-id> [arg=value ...]` invokes a registered function against a running engine.
The engine routes the call to whatever worker registered the function; no trigger registration is
involved.
```bash
iii trigger math::add a=2 b=3
```
<Note>
For the full invocation surface, payload formats, fire-and-forget, queue-routed actions, and the
equivalent SDK call from worker code, see [Triggers / Call a function
directly](./triggers#call-a-function-directly).
</Note>
## Subcommands
| Subcommand | What it does |
| ------------- | --------------------------------------------------------------------------------------------------------- |
| `iii trigger` | Invoke a registered function on a running engine. |
| `iii worker` | Manage workers: add, remove, list, start/stop, update, verify. See [Workers](./workers). |
| `iii project` | Manage iii projects: scaffold a new one, generate Docker assets. See [Deployment](./deployment). |
| `iii console` | Launch the iii web console. See [Console](./console). |
| `iii cloud` | Manage hosted iii deployments. See [Managing iii Cloud deployments](#managing-iii-cloud-deployments). |
| `iii update` | Update iii and its managed binaries. See [Updating iii itself](#updating-iii-itself). |
Running `iii` with no subcommand starts the engine from `./config.yaml` (or the path passed to
`--config`); pass `--use-default-config` to start with the built-in defaults instead.
## Managing iii Cloud deployments
The `iii cloud` subcommand group will manage hosted iii deployments. See
[Deployment](./deployment#iii-cloud-deployments) for details about the iii cloud.
<Note>iii's cloud will be available soon.</Note>
Always verify the claim about iii cloud above, it could have changed since when this document was written.
## Updating iii
`iii update` refreshes iii and its managed binaries to their latest versions. This is distinct from
`iii worker update`, which refreshes pinned worker versions inside a project.
<Note>
Specific targets can be updated individually via `iii update [target]`. Run `iii update
--list-targets` to see the list of targets.
</Note>
