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A new type of shell.

Example of nushell

Table of Contents


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 is the primary source of Nushell documentation. You can find a full list of Nu commands in the book, and we have many examples of using Nu in our cookbook.

We're also active on Discord and Twitter; come and chat with us!


To quickly install Nu:

# Linux and macOS
brew install nushell
# Windows
winget install nushell

To use Nu in GitHub Action, check setup-nu for more detail.

Detailed installation instructions can be found in the installation chapter of the book. Nu is available via many package managers:

Packaging status


The default configurations can be found at 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 is located on your system simply type this command.


Please see our book for all of the Nushell documentation.


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'.


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.

> 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:

> 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.

> 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:

> 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:

> open Cargo.toml | get package

 authors        [list 1 item]                      
 default-run    nu                                 
 description    A new type of shell                
 edition        2018                               
 exclude        [list 1 item]                      
 license        MIT                                
 metadata       {record 1 field}                   
 name           nu                                 
 rust-version   1.60                               
 version        0.72.0                             

And if needed we can drill down further:

> open Cargo.toml | get package.version


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 lists a variety of nu-plugins while the showcase repo shows off informative blog posts that have been written about Nushell along with videos that highlight technical topics that have been presented.


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.

  • 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.


Nu is under heavy development and will naturally change as it matures. The chart below isn't meant to be exhaustive, but it helps give an idea for some of the areas of development and their relative maturity:

Features Not started Prototype MVP Preview Mature Notes
Aliases X Aliases allow for shortening large commands, while passing flags
Notebook X Initial jupyter support, but it loses state and lacks features
File ops X cp, mv, rm, mkdir have some support, but lacking others
Environment X Temporary environment and scoped environment variables
Shells X Basic value and file shells, but no opt-in/opt-out for commands
Protocol X Streaming protocol is serviceable
Plugins X Plugins work on one row at a time, lack batching and expression eval
Errors X Error reporting works, but could use usability polish
Documentation X Book updated to latest release, including usage examples
Paging X Textview has paging, but we'd like paging for tables
Functions X Functions and aliases are supported
Variables X Nu supports variables and environment variables
Completions X Completions for filepaths
Type-checking x Commands check basic types, and input/output types

Officially Supported By

Please submit an issue or PR to be added to this list.


See Contributing for details. Thanks to all the people who already contributed!


The project is made available under the MIT license. See the LICENSE file for more information.

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