Supports double-star globbing
Detects files / directories added after starting watch
Watch will persist if executed shell command returns an error (ex. compile / linting errors)
Awesome magic wand terminal spinner

Note: Uses polling to work consistently across multiple platforms, therefore the CPU usage is dependent on the efficiently of your globs. With a minimal effort your watch should use very little CPU. Will switch to event-based once fsnofity has matured sufficiently.

Dependencies

Requires the Go programming language binaries with the GOPATH environment variable specified and $GOPATH/bin in your PATH.

Installation

go get github.com/kbirk/witch

Usage

witch --cmd=<shell-command> [--watch="<glob>,..."] [--ignore="<glob>,..."] [--interval=<milliseconds>]

Command-line args:

Flag	Description
`cmd`	Shell command to execute after changes are detected
`watch`	Comma separated globs to watch (default: ".")
`ignore`	Comma separated globs to ignore (default: "")
`interval`	Scan interval in milliseconds (default: 400)
`max-token-size`	Max output token size in bytes (default: 2048000)
`no-spinner`	Disable fancy terminal spinner (default: false)

Globbing

Globbing rules are the same as doublestar which supports the following special terms in the patterns:

Special Terms	Meaning
`*`	matches any sequence of non-path-separators
`**`	matches any sequence of characters, including path separators
`?`	matches any single non-path-separator character
`[class]`	matches any single non-path-separator character against a class of characters (see below)
`{alt1,...}`	matches a sequence of characters if one of the comma-separated alternatives matches

Any character with a special meaning can be escaped with a backslash (\).

Character Classes

Character classes support the following:

Class	Meaning
`[abc]`	matches any single character within the set
`[a-z]`	matches any single character in the range
`[^class]`	matches any single character which does not match the class

Any globs resolved to a directory will be have all contents watched.