Edit File: line_count_wrap.js
#!/usr/bin/env node var argv = require('optimist') .usage('Count the lines in a file.\nUsage: $0') .wrap(80) .demand('f') .alias('f', [ 'file', 'filename' ]) .describe('f', "Load a file. It's pretty important." + " Required even. So you'd better specify it." ) .alias('b', 'base') .describe('b', 'Numeric base to display the number of lines in') .default('b', 10) .describe('x', 'Super-secret optional parameter which is secret') .default('x', '') .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)); });
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