fix: explicitly set zero exit code

Author: m90

bin/cmd.js

@@ -27,11 +27,11 @@ import { execCmd } from './../lib/exec.js'
   return `Sucessfully transferred ${entities.length} entities from ${source} to ${target}.`
 })()
   .then((result) => {
-    if (result) {
-      console.log(result)
-    }
+    console.log(result)
+    process.exitCode = 0
   })
   .catch((err) => {
+    console.error('An error occurred executing the command:')
     console.error(err)
     process.exitCode = 1
   })