golang fsnotify

Golang fsnotify is a package in the Go programming language that provides a cross-platform interface for file system notifications. It allows Go programs to monitor changes to files and directories in real-time, such as file creation, modification, and deletion.

The fsnotify package uses the operating system's underlying file system notification mechanisms, such as inotify on Linux, kqueue on BSD, and ReadDirectoryChangesW on Windows, to provide a consistent API for file system events.

The package provides a simple API with a Watcher type that can be used to monitor a directory or file for changes. The Watcher type has methods to add or remove directories or files to be monitored, and a channel to receive events when changes occur.

Golang fsnotify is widely used in applications that require real-time monitoring of file system changes, such as file syncing, backup, and server monitoring. It is a powerful tool for building robust and reliable applications that can respond to changes in the file system quickly and efficiently