mirror of
https://github.com/denisidoro/navi
synced 2024-11-24 12:33:05 +00:00
a0c5a6293b
Fixes #137 
271 lines
9.4 KiB
Markdown
271 lines
9.4 KiB
Markdown
# navi <img src="https://user-images.githubusercontent.com/3226564/65362934-b4432500-dbdf-11e9-8f75-815fbc5cbf8f.png" alt="icon" height="28px"/> [](https://circleci.com/gh/denisidoro/navi) 
|
|
|
|
An interactive cheatsheet tool for the command-line so that you won't say the following anymore:
|
|
|
|
>— *How to run that command again?*<br>
|
|
— *Oh, it's not in my shell history*<br>
|
|
— *Geez, it's almost what I wanted but I need to change some args*
|
|
|
|
|
|
|
|
**navi** allows you to browse through cheatsheets (that you may write yourself or download from maintainers) and execute commands, with argument values prompted to you.
|
|
|
|
Table of contents
|
|
-----------------
|
|
|
|
* [Installation](#installation)
|
|
* [Using Homebrew or Linuxbrew](#using-homebrew-or-linuxbrew)
|
|
* [Using git](#using-git)
|
|
* [Using oh-my-zsh](#using-oh-my-zsh)
|
|
* [Upgrading](#upgrading)
|
|
* [Usage](#usage)
|
|
* [Preventing execution](#preventing-execution)
|
|
* [Pre-filtering](#pre-filtering)
|
|
* [Searching online repositories](#searching-online-repositories)
|
|
* [Shell widget](#shell-widget)
|
|
* [More options](#more-options)
|
|
* [Trying out online](#trying-out-online)
|
|
* [Motivation](#motivation)
|
|
* [Cheatsheets](#cheatsheets)
|
|
* [Using your own custom cheatsheets](#using-your-own-custom-cheatsheets)
|
|
* [Submitting cheatsheets](#submitting-cheatsheets)
|
|
* [Cheatsheet syntax](#cheatsheet-syntax)
|
|
* [Syntax overview](#syntax-overview)
|
|
* [Variables](#variables)
|
|
* [Table formatting](#table-formatting)
|
|
* [List customization](#list-customization)
|
|
* [Related projects](#related-projects)
|
|
* [Etymology](#etymology)
|
|
|
|
Installation
|
|
------------
|
|
|
|
### Using Homebrew or Linuxbrew
|
|
|
|
You can use [Homebrew](http://brew.sh/) or [Linuxbrew](http://linuxbrew.sh/)
|
|
to install **navi**:
|
|
```sh
|
|
brew install denisidoro/tools/navi
|
|
```
|
|
|
|
### Using git
|
|
|
|
Alternatively, you can `git clone` this repository:
|
|
|
|
```sh
|
|
git clone --depth 1 https://github.com/denisidoro/navi /opt/navi
|
|
cd /opt/navi
|
|
|
|
# to install in your $PATH
|
|
sudo make install
|
|
|
|
# to install in an arbitrary folder
|
|
./scripts/install /some/path
|
|
|
|
# install fzf
|
|
# refer to https://github.com/junegunn/fzf
|
|
```
|
|
|
|
### Using oh-my-zsh
|
|
|
|
Make sure that your oh-my-zsh `$ZSH_CUSTOM` directory is configured, then clone navi into the plugins directory.
|
|
```sh
|
|
plugins_dir="$ZSH_CUSTOM/plugins"
|
|
mkdir -p "$plugins_dir"
|
|
cd "$plugins_dir"
|
|
git clone https://github.com/denisidoro/navi
|
|
```
|
|
|
|
Then, add it to the oh-my-zsh plugin array to automatically enable the zsh widget:
|
|
```sh
|
|
plugins=(docker tmux fzf navi)
|
|
```
|
|
|
|
Lastly, reload your `zshrc` or spawn a new terminal to load navi. Once this is done, you should be able to use it
|
|
as a [shell widget](#shell-widget) with no additional setup.
|
|
|
|
> Please note that when installing as an oh-my-zsh plugin, `navi` will not be available as a command. If you also want
|
|
> to be able to run the command interactively, you will need to do one of the following:
|
|
|
|
- Install it to /usr/bin/local (via `sudo make install`)
|
|
- Manually set `$PATH` so that navi can be found.
|
|
|
|
You can manually update your path by adding a line like this in your `.zshrc`:
|
|
|
|
```sh
|
|
export PATH=$PATH:"$ZSH_CUSTOM/plugins/navi"
|
|
```
|
|
|
|
And verify that it works by running `which navi` after reloading your configuration.
|
|
|
|
|
|
Upgrading
|
|
---------
|
|
|
|
**navi** is being actively developed and you might want to upgrade it once in a while. Please follow the instruction below depending on the installation method used:
|
|
|
|
```sh
|
|
# brew
|
|
brew update
|
|
brew reinstall navi
|
|
|
|
# git or oh-my-zsh
|
|
cd "$(navi home)"
|
|
git pull
|
|
```
|
|
|
|
Usage
|
|
-----
|
|
|
|
By simply running `navi` you will be prompted with the default cheatsheets.
|
|
|
|
### Preventing execution
|
|
|
|
If you run `navi --print`, the selected snippet won't be executed. It will be printed to stdout instead.
|
|
|
|
### Pre-filtering
|
|
|
|
If you run `navi query <cmd>`, the results will be pre-filtered.
|
|
|
|
### Searching online repositories
|
|
|
|
If you run `navi search <cmd>`, **navi** will try to download cheatsheets from online repositories as well.
|
|
|
|
Please note that these cheatsheets aren't curated by **navi**'s maintainers and should be taken with a grain of salt. If you're not sure about executing these snippets, make sure to check the preview window or use the `--print` option.
|
|
|
|
### Shell widget
|
|
|
|
You can use **navi** as a widget to your shell. This way, your history is correctly populated and you can edit the command as you wish before executing it.
|
|
|
|
In order to use it, add this line to your `.bashrc`-like file:
|
|
```sh
|
|
# bash
|
|
source "$(navi widget bash)"
|
|
|
|
# zsh
|
|
source "$(navi widget zsh)"
|
|
|
|
# fish
|
|
source (navi widget fish)
|
|
```
|
|
|
|
By default, `Ctrl+G` is assigned to launching **navi**. If you want to change the keybinding, replace the argument of `bind` or `bindkey` in [the widget file](https://github.com/denisidoro/navi/search?q=filename%3Anavi.plugin.*&unscoped_q=filename%3Anavi.plugin.*).
|
|
|
|
If you want a widget for other shells, please upvote [this issue](https://github.com/denisidoro/navi/issues/37).
|
|
|
|
|
|
### More options
|
|
|
|
Please refer to `navi --help` for more details.
|
|
|
|
Trying out online
|
|
--------------------
|
|
|
|
If you don't have access to bash at the moment and you want to live preview **navi**, head to [this playground](https://www.katacoda.com/denisidoro/scenarios/navi). It'll start a docker container with instructions for you to install and use the tool. Note: login required.
|
|
|
|
Motivation
|
|
----------
|
|
|
|
The main objectives are:
|
|
- to increase discoverability, by finding snippets given keywords or descriptions;
|
|
- to prevent you from running auxiliar commands, copying the result into the clipboard and then pasting into the original command;
|
|
- to easily share one-liners with others so that they don't need to figure out how to write the commands;
|
|
- to improve terminal usage as a whole.
|
|
|
|
Sure, you can find autocompleters out there for all your favorite commands. However, they are very specific and each one may offer a different learning curve.
|
|
|
|
Or you can launch a browser and search for instructions on Google, but that takes some time.
|
|
|
|
**navi**, on the other hand, intends to be a general purpose platform for bookmarking any snippet at a very low cost.
|
|
|
|
Cheatsheets
|
|
-----------
|
|
|
|
### Using your own custom cheatsheets
|
|
|
|
In this case, you need to pass a `:`-separated list of separated directories which contain `.cheat` files:
|
|
```sh
|
|
navi --path "/folder/with/cheats"
|
|
```
|
|
|
|
Alternatively, you can set an environment variable in your `.bashrc`-like file:
|
|
```sh
|
|
export NAVI_PATH="/folder/with/cheats:/another/folder"
|
|
```
|
|
|
|
### Submitting cheatsheets
|
|
|
|
Feel free to fork this project and open a PR for me to include your contributions.
|
|
|
|
Cheatsheet syntax
|
|
-----------------
|
|
|
|
Cheatsheets are described in `.cheat` files.
|
|
|
|
### Syntax overview
|
|
|
|
- lines starting with `%` should contain tags which will be added to any command in a given file;
|
|
- lines starting with `#` should be descriptions of commands;
|
|
- lines starting with `$` should contain commands that generate a list of possible values for a given argument;
|
|
- all the other non-empty lines are considered as executable commands.
|
|
|
|
For example, this is a valid `.cheat` file:
|
|
```sh
|
|
% git, code
|
|
|
|
# Change branch
|
|
git checkout <branch>
|
|
|
|
$ branch: git branch | awk '{print $NF}'
|
|
```
|
|
|
|
### Variables
|
|
|
|
The interface prompts for variable names inside brackets (eg `<branch>`).
|
|
|
|
Variable names should only include alphanumeric characters and `_`.
|
|
|
|
The command for generating possible inputs can refer other variables:
|
|
```sh
|
|
# If you select 2 for x, the possible values of y will be 12 and 22
|
|
echo <x> <y>
|
|
|
|
$ x: echo -e '1\n2\n3'
|
|
$ y: echo -e "$((x+10))\n$((x+20))"
|
|
```
|
|
|
|
### Table formatting
|
|
|
|
You can pick a specific column of a selection and set the number of lines considered as headers:
|
|
|
|
```sh
|
|
# This will pick the 3rd column and use the first line as header
|
|
docker rmi <image_id>
|
|
|
|
$ image_id: docker images --- --column 3 --headers 1
|
|
```
|
|
|
|
List customization
|
|
------------------
|
|
|
|
Lists can be stylized with the [$FZF_DEFAULT_OPTS](https://github.com/junegunn/fzf) environment variable. This way, you can change the [color scheme](https://github.com/junegunn/fzf/wiki/Color-schemes), for example.
|
|
|
|
In addition:
|
|
- the `--fzf-overrides` option allows you to hide columns, for example
|
|
- the `--col-widths` option allows you to limit column widths
|
|
|
|
Please refer to `navi --help` for more details.
|
|
|
|
Related projects
|
|
----------------
|
|
|
|
There are many similar projects out there ([bro](https://github.com/hubsmoke/bro), [eg](https://github.com/srsudar/eg), [cheat.sh](https://github.com/chubin/cheat.sh), [tldr](https://github.com/tldr-pages/tldr), [cmdmenu](https://github.com/amacfie/cmdmenu), [cheat](https://github.com/cheat/cheat), [beavr](https://github.com/denisidoro/beavr), [how2](https://github.com/santinic/how2) and [howdoi](https://github.com/gleitz/howdoi), to name a few).
|
|
|
|
Most of them provide excellent cheatsheet repositories, but lack a nice UI and argument suggestions.
|
|
|
|
In any case, **navi** has the option to [search for some of these repositories](#searching-online-repositories).
|
|
|
|
Etymology
|
|
---------
|
|
|
|
In [The Legend of Zelda Ocarina of Time](https://zelda.gamepedia.com/Ocarina_of_Time), [navi](https://zelda.gamepedia.com/Navi) is a character that provides [Link](https://zelda.gamepedia.com/Link) with a variety of clues to help him solve puzzles and progress in his quest.
|