Pre-Commit Hook for Git to add the SHA to a file in your working directory.

pre-commit

#!/usr/bin/env node

var child_process = require('child_process'),
    fs = require('fs'),
    root = __dirname + '/../../',
    configFile = root + 'config/config.js',
    jslint = require(root + 'lib/jslint/jslint.js');

function setPushVersion() {
    child_process.exec('git rev-parse HEAD', { cwd: root }, function (error, stdout, stderr) {
        var hash = stdout,
            version = hash.slice(0, 7),
            data = fs.readFileSync(configFile, 'utf-8'),
            position = data.indexOf('push_version: \'') + 15,
            fd = fs.openSync(configFile, 'a', 0666);

        fs.writeSync(fd, version, position);

        child_process.exec('git add ' + configFile, { cwd: root }, function (error, stdout, stderr) {});

        console.log('Push version set to ' + version);
    });
}

jslint.run(root, function(errors) {
    if (errors > 0) {
        console.log("\033[31m" + 'DID NOT COMMIT YOUR FILES' + "\033[39m");
        process.exit(1);
    }

    setPushVersion();
});