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https://github.com/cheat/cheat

cheat allows you to create and view interactive cheatsheets on the command-line. It was designed to help remind *nix system administrators of options for commands that they use frequently, but not frequently enough to remember.
https://github.com/cheat/cheat

bash cheat cheatsheet cheatsheets documentation help interactive-cheatsheets man-page

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cheat allows you to create and view interactive cheatsheets on the command-line. It was designed to help remind *nix system administrators of options for commands that they use frequently, but not frequently enough to remember.

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cheat

=====



`cheat` allows you to create and view interactive cheatsheets on the

command-line. It was designed to help remind \*nix system administrators of

options for commands that they use frequently, but not frequently enough to

remember.



![The obligatory xkcd](http://imgs.xkcd.com/comics/tar.png 'The obligatory xkcd')



Use `cheat` with [cheatsheets][].



Example

-------

The next time you're forced to disarm a nuclear weapon without consulting

Google, you may run:



```sh

cheat tar

```



You will be presented with a cheatsheet resembling the following:



```sh

# To extract an uncompressed archive:

tar -xvf '/path/to/foo.tar'



# To extract a .gz archive:

tar -xzvf '/path/to/foo.tgz'



# To create a .gz archive:

tar -czvf '/path/to/foo.tgz' '/path/to/foo/'



# To extract a .bz2 archive:

tar -xjvf '/path/to/foo.tgz'



# To create a .bz2 archive:

tar -cjvf '/path/to/foo.tgz' '/path/to/foo/'

```



Usage

-----

To view a cheatsheet:



```sh

cheat tar      # a "top-level" cheatsheet

cheat foo/bar  # a "nested" cheatsheet

```



To edit a cheatsheet:



```sh

cheat -e tar     # opens the "tar" cheatsheet for editing, or creates it if it does not exist

cheat -e foo/bar # nested cheatsheets are accessed like this

```



To view the configured cheatpaths:



```sh

cheat -d

```



To list all available cheatsheets:



```sh

cheat -l

```



To list all cheatsheets that are tagged with "networking":



```sh

cheat -l -t networking

```



To list all cheatsheets on the "personal" path:



```sh

cheat -l -p personal

```



To search for the phrase "ssh" among cheatsheets:



```sh

cheat -s ssh

```



To search (by regex) for cheatsheets that contain an IP address:



```sh

cheat -r -s '(?:[0-9]{1,3}\.){3}[0-9]{1,3}'

```



Flags may be combined in intuitive ways. Example: to search sheets on the

"personal" cheatpath that are tagged with "networking" and match a regex:



```sh

cheat -p personal -t networking --regex -s '(?:[0-9]{1,3}\.){3}[0-9]{1,3}'

```



Installing

----------

For installation and configuration instructions, see [INSTALLING.md][].



Cheatsheets

-----------

Cheatsheets are plain-text files with no file extension, and are named

according to the command used to view them:



```sh

cheat tar     # file is named "tar"

cheat foo/bar # file is named "bar", in a "foo" subdirectory

```



Cheatsheet text may optionally be preceeded by a YAML frontmatter header that

assigns tags and specifies syntax:



```

---

syntax: javascript

tags: [ array, map ]

---

// To map over an array:

const squares = [1, 2, 3, 4].map(x => x * x);

```



The `cheat` executable includes no cheatsheets, but [community-sourced

cheatsheets are available][cheatsheets]. You will be asked if you would like to

install the community-sourced cheatsheets the first time you run `cheat`.



Cheatpaths

----------

Cheatsheets are stored on "cheatpaths", which are directories that contain

cheatsheets. Cheatpaths are specified in the `conf.yml` file.



It can be useful to configure `cheat` against multiple cheatpaths. A common

pattern is to store cheatsheets from multiple repositories on individual

cheatpaths:



```yaml

# conf.yml:

# ...

cheatpaths:

  - name: community                   # a name for the cheatpath

    path: ~/documents/cheat/community # the path's location on the filesystem

    tags: [ community ]               # these tags will be applied to all sheets on the path

    readonly: true                    # if true, `cheat` will not create new cheatsheets here



  - name: personal

    path: ~/documents/cheat/personal  # this is a separate directory and repository than above

    tags: [ personal ]

    readonly: false                   # new sheets may be written here

# ...

```



The `readonly` option instructs `cheat` not to edit (or create) any cheatsheets

on the path. This is useful to prevent merge-conflicts from arising on upstream

cheatsheet repositories.



If a user attempts to edit a cheatsheet on a read-only cheatpath, `cheat` will

transparently copy that sheet to a writeable directory before opening it for

editing.



### Directory-scoped Cheatpaths ###

At times, it can be useful to closely associate cheatsheets with a directory on

your filesystem. `cheat` facilitates this by searching for a `.cheat` folder in

the current working directory. If found, the `.cheat` directory will

(temporarily) be added to the cheatpaths.



Autocompletion

--------------

Shell autocompletion is currently available for `bash`, `fish`, and `zsh`. Copy

the relevant [completion script][completions] into the appropriate directory on

your filesystem to enable autocompletion. (This directory will vary depending

on operating system and shell specifics.)



Additionally, `cheat` supports enhanced autocompletion via integration with

[fzf][]. To enable `fzf` integration:



1. Ensure that `fzf` is available on your `$PATH`

2. Set an envvar: `export CHEAT_USE_FZF=true`



[INSTALLING.md]: INSTALLING.md

[Releases]:      https://github.com/cheat/cheat/releases

[cheatsheets]:   https://github.com/cheat/cheatsheets

[completions]:   https://github.com/cheat/cheat/tree/master/scripts

[fzf]:           https://github.com/junegunn/fzf

[go]:            https://golang.org