# Command Line Interface

Cell provides a command-line interface for managing packages, running scripts, and building applications.

## Basic Usage

```bash
cell <command> [arguments]
```

## Commands

### cell version

Display the Cell version.

```bash
cell version
# 0.1.0
```

### cell install

Install a package to the shop.

```bash
cell install gitea.pockle.world/john/prosperon
cell install /Users/john/local/mypackage  # local path
```

### cell update

Update packages from remote sources.

```bash
cell update              # update all packages
cell update <package>    # update specific package
```

### cell remove

Remove a package from the shop.

```bash
cell remove gitea.pockle.world/john/oldpackage
```

### cell list

List installed packages.

```bash
cell list              # list all installed packages
cell list <package>    # list dependencies of a package
```

### cell ls

List modules and actors in a package.

```bash
cell ls              # list files in current project
cell ls <package>    # list files in specified package
```

### cell build

Build the current package.

```bash
cell build
```

### cell test

Run tests.

```bash
cell test            # run tests in current package
cell test all        # run all tests
cell test <package>  # run tests in specific package
```

### cell link

Manage local package links for development.

```bash
cell link add <canonical> <local_path>  # link a package
cell link list                          # show all links
cell link delete <canonical>            # remove a link
cell link clear                         # remove all links
```

### cell fetch

Fetch package sources without extracting.

```bash
cell fetch <package>
```

### cell upgrade

Upgrade the Cell installation itself.

```bash
cell upgrade
```

### cell clean

Clean build artifacts.

```bash
cell clean
```

### cell help

Display help information.

```bash
cell help
cell help <command>
```

## Running Scripts

Any `.ce` file in the Cell core can be run as a command:

```bash
cell version    # runs version.ce
cell build      # runs build.ce
cell test       # runs test.ce
```

## Package Locators

Packages are identified by locators:

- **Remote**: `gitea.pockle.world/user/repo`
- **Local**: `/absolute/path/to/package`

```bash
cell install gitea.pockle.world/john/prosperon
cell install /Users/john/work/mylib
```

## Configuration

Cell stores its data in `~/.cell/`:

```
~/.cell/
├── packages/       # installed packages
├── lib/            # compiled dynamic libraries
├── build/          # build cache
├── cache/          # downloaded archives
├── lock.toml       # installed package versions
└── link.toml       # local development links
```

## Environment

Cell reads the `HOME` environment variable to locate the shop directory.

## Exit Codes

- `0` — Success
- Non-zero — Error (check output for details)