navi

From their README

navi icon Actions Status GitHub release

An interactive cheatsheet tool for the command-line.

Demo

navi allows you to browse through cheatsheets (that you may write yourself or download from maintainers) and execute commands. Suggested values for arguments are dynamically displayed in a list.

Pros

  • it will spare you from knowing CLIs by heart
  • it will spare you from copy-pasting output from intermediate commands
  • it will make you type less
  • it will teach you new one-liners

It uses fzf, skim, or Alfred under the hood and it can be either used as a command or as a shell widget (à la Ctrl-R).

Table of contents

Installation

navi can be installed with the following package managers:

Packaging status

The recommended way to install navi is by running:

brew install navi

If brew isn't available, you can check alternative install instructions.

Usage

There are multiple ways to use navi:

  • by typing navi in the terminal
    • pros: you have access to all possible subcommands and flags
  • as a shell widget for the terminal
    • pros: the shell history is correctly populated (i.e. with the actual command you ran instead of navi) and you can edit the command as you wish before executing it
  • as a Tmux widget
    • pros: you can use your cheatsheets in any command-line app even in SSH sessions
  • as aliases
  • as a shell scripting tool
  • as an Alfred workflow

In particular, check these instructions if you want to replicate what's shown in the demo above.

Cheatsheet repositories

Running navi for the first time will help you download and manage cheatsheets. By default, they are stored at ~/.local/share/navi/cheats/.

You can also:

Cheatsheet syntax

Cheatsheets are described in .cheat files that look like this:

% git, code

# Change branch
git checkout 

$ branch: git branch | awk '{print $NF}'

The full syntax and examples can be found here.

Customization

You can:

More info

Please run the following command to read more about all possible options:

navi --help

In addition, please check the /docs folder.

Similar tools

There are many similar projects out there (beavr, bro, cheat, cheat.sh, cmdmenu, eg, how2, howdoi, Command Line Interface Pages and tldr, to name a few).

They are excellent projects, but navi remains unique in the following ways:

  • it's natural to write cheatsheets tailored to your needs
  • arguments are neither hardcoded nor a simple template

Etymology

Navi is a character from The Legend of Zelda Ocarina of Time that provides Link with a variety of clues to help him solve puzzles and make progress in his quest.