fix(cli): check for empty args(cache/get)

.vscode/launch.json

@@ -122,6 +122,16 @@
       "request": "attach",
       "port": 9229,
       "preDebugTask": "func: host start"
-    }
+    },
+    {
+      "name": "Debug CLI(cache)",
+      "type": "go",
+      "request": "launch",
+      "mode": "debug",
+      "program": "${workspaceRoot}/src",
+      "args": [
+        "cache",
+      ]
+    },
   ]
 }

src/cli/cache.go

@@ -32,6 +32,10 @@ You can do the following:
 	},
 	Args: cobra.OnlyValidArgs,
 	Run: func(cmd *cobra.Command, args []string) {
+		if len(args) == 0 {
+			_ = cmd.Help()
+			return
+		}
 		env := &environment.ShellEnvironment{
 			Version: cliVersion,
 		}

src/cli/get.go

@@ -27,6 +27,10 @@ This command is used to get the value of the following variables:
 	},
 	Args: cobra.OnlyValidArgs,
 	Run: func(cmd *cobra.Command, args []string) {
+		if len(args) == 0 {
+			_ = cmd.Help()
+			return
+		}
 		env := &environment.ShellEnvironment{
 			Version: cliVersion,
 		}