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Provide standard sysexits(3) exit codes.


Provide sysexits(3) exit codes in Node.js.

It avoids having arbitrary exit codes and get them consistent with UNIX tools. For instance, an invalid CLI usage should return 64.

npm install sysexits
var Exit = require('sysexits');
if (process.args.length < 3) {
    console.log 'error:', Exit.desc[Exit.USAGE]
/* etc. */

See sysexits.js for the complete list of codes.