Initial commit

go.mod

@@ -0,0 +1,3 @@
+module git.redxen.eu/caskd/gomon
+
+go 1.18

main.go

@@ -0,0 +1,31 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"log"
+	"os"
+)
+
+func main() {
+	flag.Parse()
+
+	files := make(map[string]int)
+
+	for _, v := range flag.Args() {
+		f, err := os.ReadDir(v)
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		for _, v := range f {
+			files[v.Name()]++
+		}
+	}
+
+	for k, v := range files {
+		if v == flag.NArg() {
+			fmt.Println(k)
+		}
+	}
+}