Executes commands in response to file modifications
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.cargo Learn some build optimisations from binstall (#416) 2022-09-07 06:00:08 +00:00
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completions Fix zsh autocomplete after using --shell=bash (#417) 2022-09-15 03:17:35 +00:00
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test Remask received signal after re-raising it 2016-12-15 09:41:10 -05:00
.clippy-lints Clippy fixes (#465) 2023-01-07 02:53:49 +13:00
.editorconfig Fix cli tests 2021-08-24 22:53:44 +12:00
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Cargo.lock Reset process sigmask for Rust 1.66 (#494) 2023-02-15 11:11:57 +13:00
Cargo.toml Learn some build optimisations from binstall (#416) 2022-09-07 06:00:08 +00:00
CITATION.cff release: watchexec-cli v1.21.0 (#478) 2023-01-09 01:09:21 +00:00
CONTRIBUTING.md Add guide for crate release order (#468) 2023-01-08 15:16:00 +00:00
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CI status on main branch

Watchexec

Software development often involves running the same commands over and over. Boring!

watchexec is a simple, standalone tool that watches a path and runs a command whenever it detects modifications.

Example use cases:

  • Automatically run unit tests
  • Run linters/syntax checkers
  • Rebuild artifacts

Features

  • Simple invocation and use, does not require a cryptic command line involving xargs
  • Runs on OS X, Linux, and Windows
  • Monitors current directory and all subdirectories for changes
  • Coalesces multiple filesystem events into one, for editors that use swap/backup files during saving
  • Loads .gitignore and .ignore files
  • Uses process groups to keep hold of forking programs
  • Provides the paths that changed in environment variables
  • Does not require a language runtime, not tied to any particular language or ecosystem
  • And more!

Quick start

Watch all JavaScript, CSS and HTML files in the current directory and all subdirectories for changes, running npm run build when a change is detected:

$ watchexec -e js,css,html npm run build

Call/restart python server.py when any Python file in the current directory (and all subdirectories) changes:

$ watchexec -r -e py -- python server.py

More usage examples: in the CLI README!

Install

Packaging status

All options in detail: in the CLI README and in the manual page.

Augment

Watchexec pairs well with:

  • checkexec: to run only when source files are newer than a target file
  • just: a modern alternative to make
  • systemfd: socket-passing in development

Extend