start big

big/big.go

@@ -0,0 +1,31 @@
+package big
+
+import (
+	"fmt"
+	"io/fs"
+)
+
+func Files(fsys fs.FS, size int64) (int64, error) {
+	var count int64
+	err := fs.WalkDir(fsys, ".", func(p string, d fs.DirEntry, err error) error {
+		if err != nil {
+			return err
+		}
+		info, err := d.Info()
+		if err != nil {
+			return err
+		}
+
+		fmt.Printf("%s: [%s]\n", info.Name(), ByteCountIEC(info.Size()))
+
+		if info.Size() >= size {
+			count++
+		}
+		return nil
+	})
+	if err != nil {
+		return 0, err
+	}
+
+	return count, nil
+}

big/bytes.go

@@ -0,0 +1,31 @@
+package big
+
+import "fmt"
+
+func ByteCountSI(b int64) string {
+	const unit = 1000
+	if b < unit {
+		return fmt.Sprintf("%d B", b)
+	}
+	div, exp := int64(unit), 0
+	for n := b / unit; n >= unit; n /= unit {
+		div *= unit
+		exp++
+	}
+	return fmt.Sprintf("%.1f %cB",
+		float64(b)/float64(div), "kMGTPE"[exp])
+}
+
+func ByteCountIEC(b int64) string {
+	const unit = 1024
+	if b < unit {
+		return fmt.Sprintf("%d B", b)
+	}
+	div, exp := int64(unit), 0
+	for n := b / unit; n >= unit; n /= unit {
+		div *= unit
+		exp++
+	}
+	return fmt.Sprintf("%.1f %ciB",
+		float64(b)/float64(div), "KMGTPE"[exp])
+}

big/cmd/big/main.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+
+	"github.com/davemolk/scripts/big"
+)
+
+
+func main() {
+	var dir string
+	var size int64
+	flag.StringVar(&dir, "d", ".", "directory to start walk")
+	flag.Int64Var(&size, "s", 0, "minimum file size")
+	flag.Parse()
+
+	c, err := big.Files(os.DirFS(dir), size)
+	if err != nil {
+		fmt.Println(err)
+	}
+	fmt.Println(c)
+}