knut: add Error #1 ∧ Pro-Tip

1 files changed, 10 insertions, 0 deletions

diff --git a/cholerab/knut/index.js b/cholerab/knut/index.js
index 9c536006..b8951f1d 100755
--- a/cholerab/knut/index.js
+++ b/cholerab/knut/index.js
@@ -12,6 +12,16 @@ var spawn = require('child_process').spawn;
 
 var plugs = process.argv.slice(2);
 
+if (plugs.length === 0) {
+  console.error('Error 1: You are made of stupid!'
+      + '\nPro-Tip: '
+      + require('path').basename(process.argv[1]) + ' PLUG'
+      + ' # PLUG ∈ {'
+      + require('fs').readdirSync(__dirname + '/plugs').join(',')
+      + '}^n, n ≥ 1');
+  process.exit(23);
+};
+
 http.createServer(function (req, res) {
   return slurp(req, function (data) {
     try {