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+---
+title: "Command Line Interface"
+description: "The pit tool"
+type: "standalone"
+---
+
+ƿit provides a command-line interface for managing packages, running scripts, and building applications.
+
+## Basic Usage
+
+```bash
+pit <command> [arguments]
+```
+
+## Commands
+
+### pit version
+
+Display the ƿit version.
+
+```bash
+pit version
+# 0.1.0
+```
+
+### pit install
+
+Install a package to the shop.
+
+```bash
+pit install gitea.pockle.world/john/prosperon
+pit install /Users/john/local/mypackage  # local path
+```
+
+### pit update
+
+Update packages from remote sources.
+
+```bash
+pit update              # update all packages
+pit update <package>    # update specific package
+```
+
+### pit remove
+
+Remove a package from the shop.
+
+```bash
+pit remove gitea.pockle.world/john/oldpackage
+```
+
+### pit list
+
+List installed packages.
+
+```bash
+pit list              # list all installed packages
+pit list <package>    # list dependencies of a package
+```
+
+### pit ls
+
+List modules and actors in a package.
+
+```bash
+pit ls              # list files in current project
+pit ls <package>    # list files in specified package
+```
+
+### pit build
+
+Build the current package.
+
+```bash
+pit build
+```
+
+### pit test
+
+Run tests.
+
+```bash
+pit test            # run tests in current package
+pit test all        # run all tests
+pit test <package>  # run tests in specific package
+```
+
+### pit link
+
+Manage local package links for development.
+
+```bash
+pit link add <canonical> <local_path>  # link a package
+pit link list                          # show all links
+pit link delete <canonical>            # remove a link
+pit link clear                         # remove all links
+```
+
+### pit fetch
+
+Fetch package sources without extracting.
+
+```bash
+pit fetch <package>
+```
+
+### pit upgrade
+
+Upgrade the ƿit installation itself.
+
+```bash
+pit upgrade
+```
+
+### pit clean
+
+Clean build artifacts.
+
+```bash
+pit clean
+```
+
+### pit help
+
+Display help information.
+
+```bash
+pit help
+pit help <command>
+```
+
+## Running Scripts
+
+Any `.ce` file in the ƿit core can be run as a command:
+
+```bash
+pit version    # runs version.ce
+pit build      # runs build.ce
+pit test       # runs test.ce
+```
+
+## Package Locators
+
+Packages are identified by locators:
+
+- **Remote**: `gitea.pockle.world/user/repo`
+- **Local**: `/absolute/path/to/package`
+
+```bash
+pit install gitea.pockle.world/john/prosperon
+pit install /Users/john/work/mylib
+```
+
+## Configuration
+
+ƿit stores its data in `~/.pit/`:
+
+```
+~/.pit/
+├── packages/       # installed packages
+├── lib/            # compiled dynamic libraries
+├── build/          # build cache
+├── cache/          # downloaded archives
+├── lock.toml       # installed package versions
+└── link.toml       # local development links
+```
+
+## Environment
+
+ƿit reads the `HOME` environment variable to locate the shop directory.
+
+## Exit Codes
+
+- `0` — Success
+- Non-zero — Error (check output for details)