update

node_modules/optimist/example/line_count_options.js

@@ -0,0 +1,29 @@
+#!/usr/bin/env node
+var argv = require('optimist')
+    .usage('Count the lines in a file.\nUsage: $0')
+    .options({
+        file : {
+            demand : true,
+            alias : 'f',
+            description : 'Load a file'
+        },
+        base : {
+            alias : 'b',
+            description : 'Numeric base to use for output',
+            default : 10,
+        },
+    })
+    .argv
+;
+
+var fs = require('fs');
+var s = fs.createReadStream(argv.file);
+
+var lines = 0;
+s.on('data', function (buf) {
+    lines += buf.toString().match(/\n/g).length;
+});
+
+s.on('end', function () {
+    console.log(lines.toString(argv.base));
+});