Weekly Learn Log: Apache 2.4, SSL Vulnerabilities, Regex

3/21

• Apache 2.4: no more order allow,deny followed by allow from all. Now
  it’s Require all granted.

3/22

• SSL server cert and config test
• sysv-rc-conf: Easy service management for linux.

3/23

• PHP short_open_tag is off by default in the Ubuntu distro of PHP 5.5.
• Add it to your apache conf to enable (or NGINX equivalent). Don’t
  use .htaccess if you don’t have to.
  php_flag short_open_tag 1

3/25

• PCRE (perl compatible regular expressions) supports POSIX character classes.
  Details here
• Example in PHP: This strips out non-printable characters:
  preg_replace('/[[:^print:]]/', '', $data);

3/26

• git request-pull is a low level equivalent of a pull request on GitHub
  or other service. I don’t think it’s useful if using a service or web
  interface for your central repo administration.