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var express = require('express'),

app = express(),

dir = process.argv[2].toString(),

port = process.env.PORT || 3000;

if (!dir) {

console.log('No directory specified\n(Usage: node index.js <directory>)');

return;

}

console.log('Serving from directory: ' + dir);

app.use(express.static(dir));

app.listen(port, function() {

console.log('Listening on port ' + port);

});