fix bug,fix spelling mistakes,del redundant code

common/legoCmd/cmd/cmd_before.go

@@ -0,0 +1,23 @@
+package cmd
+
+import (
+	"github.com/Yuzuki616/V2bX/common/legoCmd/log"
+	"github.com/urfave/cli"
+)
+
+func Before(ctx *cli.Context) error {
+	if ctx.GlobalString("path") == "" {
+		log.Panic("Could not determine current working directory. Please pass --path.")
+	}
+
+	err := createNonExistingFolder(ctx.GlobalString("path"))
+	if err != nil {
+		log.Panicf("Could not check/create path: %v", err)
+	}
+
+	if ctx.GlobalString("server") == "" {
+		log.Panic("Could not determine current working server. Please pass --server.")
+	}
+
+	return nil
+}