CLI Reference

jnc provides a comprehensive set of commands for managing workspaces, dependencies, environments, and tasks.

Global Options

These options are available on every command:

Option	Description
`-h`, `--help`	Display help information
`-v`, `--verbose`	Increase logging verbosity (`-v` warnings, `-vv` info, `-vvv` debug, `-vvvv` trace)
`-q`, `--quiet`	Decrease logging verbosity (quiet mode)
`--color <auto\|always\|never>`	Control colored output (default: `auto`)
`--no-progress`	Hide all progress bars

Commands

Workspace Management

Command	Alias	Description
`jnc init`		Create a new workspace
`jnc install`	`i`	Install an environment, updating the lockfile if needed
`jnc reinstall`		Re-install an environment with optional package filtering
`jnc lock`		Solve the environment and update the lock file without installing
`jnc import`		Import an environment from a conda `environment.yml` file
`jnc info`		Show workspace and system information
`jnc clean`		Remove workspace environments and caches

Dependencies

Command	Alias	Description
`jnc add`	`a`	Add dependencies to the workspace
`jnc remove`	`rm`	Remove dependencies from the workspace
`jnc update`		Update dependencies in the lock file
`jnc upgrade`		Upgrade dependencies with loosened version constraints
`jnc list`	`ls`	List packages installed in the environment
`jnc tree`	`t`	Show a dependency tree
`jnc search`		Search for packages in configured channels

Tasks and Execution

Command	Alias	Description
`jnc run`	`r`	Run a task or command in the environment
`jnc exec`	`x`	Run a command in a temporary environment
`jnc task`		Manage workspace tasks (add, remove, list, alias)

Shell

Command	Alias	Description
`jnc shell`	`s`	Start an interactive shell in the environment
`jnc shell-hook`		Print the environment activation script

Global Tools

Command	Alias	Description
`jnc global`	`g`	Manage globally installed tools in isolated environments

Workspace Configuration

Command	Description
`jnc workspace`	Manage workspace settings (platforms, channels, environments, features)
`jnc config`	View or edit jnc configuration
`jnc auth`	Manage conda channel authentication

Build and Publish

Command	Description
`jnc build`	Build a conda package from the workspace
`jnc upload`	Upload a package to a channel

Utilities

Command	Description
`jnc completion`	Generate shell completion scripts
`jnc probe`	Detect hardware capabilities (e.g., NVIDIA Jetson)

Update Options

Several commands support options that control how the lock file and environment are updated:

Option	Description
`--frozen`	Use the lockfile as-is, do not update it even if the manifest has changed
`--locked`	Require the lockfile to be up-to-date with the manifest, abort if not
`--no-install`	Only modify the lock file, do not install the environment
`--as-is`	Shorthand for `--frozen --no-install` (available on `run`, `shell`, `shell-hook`)

jnc initCreate a new workspace with a manifest file and project scaffolding.