Initial commit

go.mod

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

main.go

@@ -0,0 +1,37 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"log"
+	"os"
+)
+
+func main() {
+	flag.Parse()
+
+	files := make(map[string]int)
+
+	for i, v := range flag.Args() {
+		f, err := os.ReadDir(v)
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		for _, df := range f {
+			var weight int
+			if i == 0 {
+				weight = 1
+			} else {
+				weight = -1
+			}
+			files[df.Name()] += weight
+		}
+	}
+
+	for k, v := range files {
+		if v == 1 {
+			fmt.Println(k)
+		}
+	}
+}