Improved error message for users

lib/symlink.go

@@ -11,7 +11,13 @@ func CreateSymlink(cwd string, dir string) {
 
 	err := os.Symlink(cwd, dir)
 	if err != nil {
-		log.Fatal("Unable to create symlink. You must have SUDO privileges")
+		log.Fatalf(`
+		Unable to create new symlink.
+		Maybe symlink already exist. Try running removing existing symlink.
+		Try running "unlink %s" to remove existing symlink.
+		Maybe you do not have privilege to create symlink at %s.
+		Error: %s
+		`, dir, dir, err)
 		panic(err)
 	}
 }
@@ -21,12 +27,24 @@ func RemoveSymlink(symlinkPath string) {
 
 	_, err := os.Lstat(symlinkPath)
 	if err != nil {
-		log.Fatalf("Unable to find symlink. You must have SUDO privileges - %v \n", err)
+		log.Fatalf(`
+		Unable to remove symlink.
+		Try running removing existing symlink.
+		Try running "unlink %s" to remove existing symlink.
+		Maybe you do not have privilege to remove symlink at %s.
+		Error: %s
+		`, symlinkPath, symlinkPath, err)
 		panic(err)
 	} else {
 		errRemove := os.Remove(symlinkPath)
 		if errRemove != nil {
-			log.Fatalf("Unable to remove symlink. You must have SUDO privileges - %v \n", err)
+			log.Fatalf(`
+			Unable to remove symlink.
+			Try running removing existing symlink.
+			Try running "unlink %s" to remove existing symlink.
+			Maybe you do not have privilege to remove symlink at %s.
+			Error: %s
+			`, symlinkPath, symlinkPath, errRemove)
 			panic(errRemove)
 		}
 	}