Quick script to place a single file in every repository in your Github organization

placeFileInAllGithubRepos.php

<?php

## Generate a Github user token at https://github.com/settings/tokens
$githubToken    = 'EnterYourGithubTokenHere';

## Your organization name (from https://github.com/yourOrganizationName)
$organization   = 'yourOrganizationName';

## Enter the name of the remote file you want to place
$remoteFile     = "pull_request_template.md";

## A local file that you wish to place in each repository if it doesn't already exist
$localFile      = './pull_request_template.md';

## Local working dir. Code is checked out here, updated, uploaded, then deleted
$workDir        = __DIR__.'/working';

## set $dryRun to false to actually perform the 'git push' command
$dryRun         = true;

## Enter a commit message
$commitMessage = "Updating Pull Request Template ".date('Y-m-d');

if (!file_exists($localFile)) {
    echo "ERROR: {$localFile} must be present\n\n";
    exit;
}

$continue   = true;
$page       = 1;

while ($continue) {
    $curl = curl_init("https://api.github.com/orgs/{$organization}/repos?page={$page}");
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($curl, CURLOPT_HTTPHEADER, [
        "Authorization: token {$githubToken}",
        "User-Agent: placeFileInAllGithubRepos.php v0.001"
    ]);

    $rawResponse = curl_exec($curl);
    $response = json_decode($rawResponse, true);

    if (empty($response)) {
        echo "No more pages\n";
        $continue = false;
    }
    $page++;

    $localMd5 = md5_file($localFile);

    echo "Github has ".count($response)." repos for the {$organization} Organization\n";

    foreach ($response as $repo) {

        if ($workDir && file_exists($workDir) && is_dir($workDir)) {
            echo "Removing old workdir at {$workDir}\n";
            exec("rm -Rf {$workDir}");
        }

        echo "Checking out {$repo['full_name']} to {$workDir}\n";
        $command = "git clone {$repo['ssh_url']} {$workDir}";
        exec($command);

        $placeFile = true;
        if (file_exists("{$workDir}/{$remoteFile}")) {
            $remoteMd5 = md5_file("{$workDir}/{$remoteFile}");
            if ($remoteMd5 == $localMd5) {
                $placeFile = false;
            }
        }

        if ($placeFile) {
            echo "  {$remoteFile} needs placed\n";
            copy($localFile, "{$workDir}/{$remoteFile}");

            passthru("git --git-dir={$workDir}/.git --work-tree={$workDir} add {$remoteFile}");
            passthru("git --git-dir={$workDir}/.git --work-tree={$workDir} commit -m \"{$commitMessage}\"");
            echo "  committed\n";
            if (!$dryRun) {
                exec("git --git-dir={$workDir}/.git push");
                echo "  git push completed\n";
            }
        } else {
            echo "  {$remoteFile} is already present and correct\n";
        }
        exec("rm -Rf {$workDir}");
    }
}