watchexec: new cheatsheet

watchexec.md

@@ -0,0 +1,61 @@
+---
+title: Watchexec
+layout: 2017/sheet
+updated: 2017-10-18
+category: CLI
+weight: -1
+keywords:
+  - "watchexec --excts js,jsx -- npm test"
+  - "watchexec --help"
+intro: |
+  [mattgreen/watchexec](https://github.com/mattgreen/watchexec) runs commands whenever certain files change.
+---
+
+### Installation
+
+#### OSX
+
+```bash
+brew install watchexec
+```
+
+#### Rust
+
+```bash
+cargo install watchexec
+```
+
+For Linux and Windows, get it from [GitHub releases](https://github.com/mattgreen/watchexec).
+
+### Getting started
+
+```bash
+watchexec --exts js,jsx -- npm test
+```
+
+Runs `npm test` when `js,jsx` files change.
+
+```bash
+watchman -w lib -w test -- npm test
+```
+
+Runs `npm test` when `lib/` and `test/` files change.
+
+### Other options
+
+#### Flags
+
+| `-c` `--clear`   | Clear screen                         |
+| `-r` `--restart` | Restart process if its still running |
+
+#### Options
+
+| `-s` `--signal SIGKILL` | Kill signal to use            |
+| `-d` `--debounce MS`    | Debounce by `MS` milliseconds |
+| `-e` `--exts EXTS`      | Extensions                    |
+| `-i` `--ignore PATTERN` | Ignore these files            |
+| `-w` `--watch PATH`     | Watch these directories       |
+
+## Also see
+
+* [mattgreen/watchexec](https://github.com/mattgreen/watchexec) _(github.com)_