work.suroh.tk/node_modules/optimist/example/string.js

#!/usr/bin/env node
var argv = require('optimist')
    .string('x', 'y')
    .argv
;
console.dir([ argv.x, argv.y ]);

/* Turns off numeric coercion:
    ./node string.js -x 000123 -y 9876
    [ '000123', '9876' ]
*/