--- /dev/null
+#!/usr/bin/env node
+var argv = require('optimist')
+ .usage('Count the lines in a file.\nUsage: $0')
+ .demand('f')
+ .alias('f', 'file')
+ .describe('f', 'Load a file')
+ .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);
+});