How do I watch file changes in Go?

In Go, you can watch for file changes using the `fsnotify` package. This package provides a simple way to monitor file system events, such as modifications, creations, deletions, and renaming of files and directories. Below is a code example demonstrating how to use `fsnotify` to watch for changes in a specific file or directory.


    package main

    import (
        "fmt"
        "log"
        "github.com/fsnotify/fsnotify"
    )

    func main() {
        // Create a new file watcher
        watcher, err := fsnotify.NewWatcher()
        if err != nil {
            log.Fatal(err)
        }
        defer watcher.Close()

        // Start listening for events
        go func() {
            for {
                select {
                case event, ok := <-watcher.Events:
                    if !ok {
                        return
                    }
                    fmt.Println("event:", event)

                    if event.Op&fsnotify.Write == fsnotify.Write {
                        fmt.Println("modified file:", event.Name)
                    }
                case err, ok := <-watcher.Errors:
                    if !ok {
                        return
                    }
                    log.Println("error:", err)
                }
            }
        }()

        // Add a specific file or directory to watch
        err = watcher.Add("/path/to/your/file/or/directory")
        if err != nil {
            log.Fatal(err)
        }

        // Block forever
        <-make(chan struct{})
    }

How do I watch file changes in Go?

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How do I watch file changes in Go?

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