Having some basic knowledge of SSH and Unix commands is very useful. Developed in 1995, SSH (Secure Shell) was created as a secure alternative to Telnet. Telnet is a protocol allowing for command line access to a Unix, Linux or FreeBSD based remote computer. I’ve listed some basic commands to get you familiar with them. The cd command is used to move to a specific directory. Command: cd Format: cd /directory/to/browse

在很多时候，我们会使用透明度来增强网站的可读性，但是浏览器的兼容性使得我们不得不使用图片或者放弃这种效果，下面这段CSS则兼容所有的浏览器，

Drupal 是由很小的核心和几千个实现不同功能的模块组成，无论要实现什么功能，几乎都可以通过找到模块来实现。但是一个中等的系统会需要几十个或者上百个模