mirror of
https://github.com/nushell/nushell.git
synced 2024-11-22 16:33:37 +01:00
ae6489f04b
Add x-cmd in the support list. # Description We like nushell, so we manage to add x-cmd support in the nushell. Here is our demo. https://www.x-cmd.com/mod/nu Thank you.
238 lines
12 KiB
Markdown
238 lines
12 KiB
Markdown
# Nushell <!-- omit in toc -->
|
|
[](https://crates.io/crates/nu)
|
|
[](https://github.com/nushell/nushell/actions)
|
|
[](https://github.com/nushell/nushell/actions/workflows/nightly-build.yml)
|
|
[](https://discord.gg/NtAbbGn)
|
|
[](https://changelog.com/podcast/363)
|
|
[](https://twitter.com/nu_shell)
|
|
[](https://github.com/nushell/nushell/graphs/commit-activity)
|
|
[](https://github.com/nushell/nushell/graphs/contributors)
|
|
|
|
A new type of shell.
|
|
|
|
|
|
|
|
## Table of Contents <!-- omit in toc -->
|
|
|
|
- [Status](#status)
|
|
- [Learning About Nu](#learning-about-nu)
|
|
- [Installation](#installation)
|
|
- [Configuration](#configuration)
|
|
- [Philosophy](#philosophy)
|
|
- [Pipelines](#pipelines)
|
|
- [Opening files](#opening-files)
|
|
- [Plugins](#plugins)
|
|
- [Goals](#goals)
|
|
- [Officially Supported By](#officially-supported-by)
|
|
- [Contributing](#contributing)
|
|
- [License](#license)
|
|
|
|
## Status
|
|
|
|
This project has reached a minimum-viable-product level of quality. Many people use it as their daily driver, but it may be unstable for some commands. Nu's design is subject to change as it matures.
|
|
|
|
## Learning About Nu
|
|
|
|
The [Nushell book](https://www.nushell.sh/book/) is the primary source of Nushell documentation. You can find [a full list of Nu commands in the book](https://www.nushell.sh/commands/), and we have many examples of using Nu in our [cookbook](https://www.nushell.sh/cookbook/).
|
|
|
|
We're also active on [Discord](https://discord.gg/NtAbbGn) and [Twitter](https://twitter.com/nu_shell); come and chat with us!
|
|
|
|
## Installation
|
|
|
|
To quickly install Nu:
|
|
|
|
```bash
|
|
# Linux and macOS
|
|
brew install nushell
|
|
# Windows
|
|
winget install nushell
|
|
```
|
|
|
|
To use `Nu` in GitHub Action, check [setup-nu](https://github.com/marketplace/actions/setup-nu) for more detail.
|
|
|
|
Detailed installation instructions can be found in the [installation chapter of the book](https://www.nushell.sh/book/installation.html). Nu is available via many package managers:
|
|
|
|
[](https://repology.org/project/nushell/versions)
|
|
|
|
For details about which platforms the Nushell team actively supports, see [our platform support policy](devdocs/PLATFORM_SUPPORT.md).
|
|
|
|
## Configuration
|
|
|
|
The default configurations can be found at [sample_config](crates/nu-utils/src/sample_config)
|
|
which are the configuration files one gets when they startup Nushell for the first time.
|
|
|
|
It sets all of the default configuration to run Nushell. From here one can
|
|
then customize this file for their specific needs.
|
|
|
|
To see where *config.nu* is located on your system simply type this command.
|
|
|
|
```rust
|
|
$nu.config-path
|
|
```
|
|
|
|
Please see our [book](https://www.nushell.sh) for all of the Nushell documentation.
|
|
|
|
|
|
## Philosophy
|
|
|
|
Nu draws inspiration from projects like PowerShell, functional programming languages, and modern CLI tools.
|
|
Rather than thinking of files and data as raw streams of text, Nu looks at each input as something with structure.
|
|
For example, when you list the contents of a directory what you get back is a table of rows, where each row represents an item in that directory.
|
|
These values can be piped through a series of steps, in a series of commands called a 'pipeline'.
|
|
|
|
### Pipelines
|
|
|
|
In Unix, it's common to pipe between commands to split up a sophisticated command over multiple steps.
|
|
Nu takes this a step further and builds heavily on the idea of _pipelines_.
|
|
As in the Unix philosophy, Nu allows commands to output to stdout and read from stdin.
|
|
Additionally, commands can output structured data (you can think of this as a third kind of stream).
|
|
Commands that work in the pipeline fit into one of three categories:
|
|
|
|
- Commands that produce a stream (e.g., `ls`)
|
|
- Commands that filter a stream (e.g., `where type == "dir"`)
|
|
- Commands that consume the output of the pipeline (e.g., `table`)
|
|
|
|
Commands are separated by the pipe symbol (`|`) to denote a pipeline flowing left to right.
|
|
|
|
```shell
|
|
> ls | where type == "dir" | table
|
|
╭────┬──────────┬──────┬─────────┬───────────────╮
|
|
│ # │ name │ type │ size │ modified │
|
|
├────┼──────────┼──────┼─────────┼───────────────┤
|
|
│ 0 │ .cargo │ dir │ 0 B │ 9 minutes ago │
|
|
│ 1 │ assets │ dir │ 0 B │ 2 weeks ago │
|
|
│ 2 │ crates │ dir │ 4.0 KiB │ 2 weeks ago │
|
|
│ 3 │ docker │ dir │ 0 B │ 2 weeks ago │
|
|
│ 4 │ docs │ dir │ 0 B │ 2 weeks ago │
|
|
│ 5 │ images │ dir │ 0 B │ 2 weeks ago │
|
|
│ 6 │ pkg_mgrs │ dir │ 0 B │ 2 weeks ago │
|
|
│ 7 │ samples │ dir │ 0 B │ 2 weeks ago │
|
|
│ 8 │ src │ dir │ 4.0 KiB │ 2 weeks ago │
|
|
│ 9 │ target │ dir │ 0 B │ a day ago │
|
|
│ 10 │ tests │ dir │ 4.0 KiB │ 2 weeks ago │
|
|
│ 11 │ wix │ dir │ 0 B │ 2 weeks ago │
|
|
╰────┴──────────┴──────┴─────────┴───────────────╯
|
|
```
|
|
|
|
Because most of the time you'll want to see the output of a pipeline, `table` is assumed.
|
|
We could have also written the above:
|
|
|
|
```shell
|
|
> ls | where type == "dir"
|
|
```
|
|
|
|
Being able to use the same commands and compose them differently is an important philosophy in Nu.
|
|
For example, we could use the built-in `ps` command to get a list of the running processes, using the same `where` as above.
|
|
|
|
```shell
|
|
> ps | where cpu > 0
|
|
╭───┬───────┬───────────┬───────┬───────────┬───────────╮
|
|
│ # │ pid │ name │ cpu │ mem │ virtual │
|
|
├───┼───────┼───────────┼───────┼───────────┼───────────┤
|
|
│ 0 │ 2240 │ Slack.exe │ 16.40 │ 178.3 MiB │ 232.6 MiB │
|
|
│ 1 │ 16948 │ Slack.exe │ 16.32 │ 205.0 MiB │ 197.9 MiB │
|
|
│ 2 │ 17700 │ nu.exe │ 3.77 │ 26.1 MiB │ 8.8 MiB │
|
|
╰───┴───────┴───────────┴───────┴───────────┴───────────╯
|
|
```
|
|
|
|
### Opening files
|
|
|
|
Nu can load file and URL contents as raw text or structured data (if it recognizes the format).
|
|
For example, you can load a .toml file as structured data and explore it:
|
|
|
|
```shell
|
|
> open Cargo.toml
|
|
╭──────────────────┬────────────────────╮
|
|
│ bin │ [table 1 row] │
|
|
│ dependencies │ {record 25 fields} │
|
|
│ dev-dependencies │ {record 8 fields} │
|
|
│ features │ {record 10 fields} │
|
|
│ package │ {record 13 fields} │
|
|
│ patch │ {record 1 field} │
|
|
│ profile │ {record 3 fields} │
|
|
│ target │ {record 3 fields} │
|
|
│ workspace │ {record 1 field} │
|
|
╰──────────────────┴────────────────────╯
|
|
```
|
|
|
|
We can pipe this into a command that gets the contents of one of the columns:
|
|
|
|
```shell
|
|
> open Cargo.toml | get package
|
|
╭───────────────┬────────────────────────────────────╮
|
|
│ authors │ [list 1 item] │
|
|
│ default-run │ nu │
|
|
│ description │ A new type of shell │
|
|
│ documentation │ https://www.nushell.sh/book/ │
|
|
│ edition │ 2018 │
|
|
│ exclude │ [list 1 item] │
|
|
│ homepage │ https://www.nushell.sh │
|
|
│ license │ MIT │
|
|
│ metadata │ {record 1 field} │
|
|
│ name │ nu │
|
|
│ repository │ https://github.com/nushell/nushell │
|
|
│ rust-version │ 1.60 │
|
|
│ version │ 0.72.0 │
|
|
╰───────────────┴────────────────────────────────────╯
|
|
```
|
|
|
|
And if needed we can drill down further:
|
|
|
|
```shell
|
|
> open Cargo.toml | get package.version
|
|
0.72.0
|
|
```
|
|
|
|
### Plugins
|
|
|
|
Nu supports plugins that offer additional functionality to the shell and follow the same structured data model that built-in commands use. There are a few examples in the `crates/nu_plugins_*` directories.
|
|
|
|
Plugins are binaries that are available in your path and follow a `nu_plugin_*` naming convention.
|
|
These binaries interact with nu via a simple JSON-RPC protocol where the command identifies itself and passes along its configuration, making it available for use.
|
|
If the plugin is a filter, data streams to it one element at a time, and it can stream data back in return via stdin/stdout.
|
|
If the plugin is a sink, it is given the full vector of final data and is given free reign over stdin/stdout to use as it pleases.
|
|
|
|
The [awesome-nu repo](https://github.com/nushell/awesome-nu#plugins) lists a variety of nu-plugins while the [showcase repo](https://github.com/nushell/showcase) *shows* off informative blog posts that have been written about Nushell along with videos that highlight technical
|
|
topics that have been presented.
|
|
|
|
## Goals
|
|
|
|
Nu adheres closely to a set of goals that make up its design philosophy. As features are added, they are checked against these goals.
|
|
|
|
- First and foremost, Nu is cross-platform. Commands and techniques should work across platforms and Nu has [first-class support for Windows, macOS, and Linux](devdocs/PLATFORM_SUPPORT.md).
|
|
|
|
- Nu ensures compatibility with existing platform-specific executables.
|
|
|
|
- Nu's workflow and tools should have the usability expected of modern software in 2022 (and beyond).
|
|
|
|
- Nu views data as either structured or unstructured. It is a structured shell like PowerShell.
|
|
|
|
- Finally, Nu views data functionally. Rather than using mutation, pipelines act as a means to load, change, and save data without mutable state.
|
|
|
|
## Officially Supported By
|
|
|
|
Please submit an issue or PR to be added to this list.
|
|
|
|
- [zoxide](https://github.com/ajeetdsouza/zoxide)
|
|
- [starship](https://github.com/starship/starship)
|
|
- [oh-my-posh](https://ohmyposh.dev)
|
|
- [Couchbase Shell](https://couchbase.sh)
|
|
- [virtualenv](https://github.com/pypa/virtualenv)
|
|
- [atuin](https://github.com/ellie/atuin)
|
|
- [clap](https://github.com/clap-rs/clap/tree/master/clap_complete_nushell)
|
|
- [Dorothy](http://github.com/bevry/dorothy)
|
|
- [Direnv](https://github.com/direnv/direnv/blob/master/docs/hook.md#nushell)
|
|
- [x-cmd](https://x-cmd.com/mod/nu)
|
|
|
|
## Contributing
|
|
|
|
See [Contributing](CONTRIBUTING.md) for details. Thanks to all the people who already contributed!
|
|
|
|
<a href="https://github.com/nushell/nushell/graphs/contributors">
|
|
<img src="https://contributors-img.web.app/image?repo=nushell/nushell&max=750" />
|
|
</a>
|
|
|
|
## License
|
|
|
|
The project is made available under the MIT license. See the `LICENSE` file for more information.
|